JP2010281848A - Camera body, lens barrel and camera system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance cinvenience in a camera system having a camera body and an interchangeable lens. <P>SOLUTION: The camera system 1 includes the interchangeable lens unit 2 and the camera body 3. The camera body 3 includes a body-side focus operation part, and the interchangeable lens unit 2 is compatible with electric manual focus and includes a focus ring 67 as a lens-side focus operation part. A body microcomputer 10 of the camera body 3 assigns a function of an electric manual focus operation member to either of the body-side focus operation part and the lens-side focus operation part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a digital camera body, a lens barrel, and a camera system capable of exchanging lenses.

  In recent years, digital single-lens reflex cameras that can convert an optical image of a subject into an electrical image signal and output the signal are rapidly spreading. In this digital single-lens reflex camera, when observing a subject using a finder by a user, light incident on the photographing lens (that is, a subject image) is reflected by a reflecting mirror disposed on the photographing optical path after the lens, thereby changing the optical path. The object image through the lens can be viewed from the optical viewfinder by changing the image and introducing the image upright through a pentaprism or the like to the optical viewfinder. Therefore, normally, the position where the finder optical path is formed is the fixed position of the reflecting mirror.

  On the other hand, when the lens is used for shooting, the position of the reflecting mirror is instantly changed and retracted from the shooting optical path to switch the finder optical path to the shooting optical path. . This method is the same for both conventional silver salt cameras and digital cameras as long as they are single lens reflex systems.

  One of the features of digital cameras is that you can shoot while looking at a display device (for example, a liquid crystal monitor) at the time of shooting, and you can check the shot image immediately after shooting. If used, there is a problem that the liquid crystal monitor cannot be used during photographing. As described above, since it is impossible to shoot using the liquid crystal monitor, it is necessary to take a picture through the viewfinder, so that it is very difficult to use especially for beginners who are unfamiliar with digital camera shooting. In recent years, functions such as moving image shooting as well as still image shooting are desired.

  Some interchangeable lenses that can be attached to the camera body have a manual focus function for manually adjusting the focus by rotating the manual ring. Further, there are functions that mechanically operate the focus lens in accordance with the rotation of the ring, and functions that electrically operate the focus lens by converting the rotation of the ring into an electric signal.

  Patent Document 1 discloses a configuration in which an interchangeable lens type digital single-lens reflex camera can shoot while looking at a liquid crystal monitor.

Patent Document 2 discloses a configuration of an interchangeable lens for a camera that is used by switching between autofocus and electric manual focus.
JP 2001-125173 A Japanese Patent Laid-Open No. 1-108514

  When an interchangeable lens equipped with an electric manual focus function is attached to an interchangeable lens single-lens reflex camera, it is common to perform a focus operation with a focus operation key on the main body side. However, some interchangeable lenses equipped with an electric manual focus function have a focus operation ring on the interchangeable lens side as described above, and when such an interchangeable lens is connected to a camera body having a focus operation key, There is a problem that the focus operation function competes and the system breaks down. In addition, there are two cases of digital single-lens reflex cameras when shooting while looking at the LCD monitor and when shooting while looking through the viewfinder. Another problem is that it is necessary to perform a focus operation appropriate to each case. There is also.

  However, there is no disclosure of these problems in Patent Document 1 and Patent Document 2.

  The present invention has been made in order to solve the above-described problems. When an interchangeable lens unit having an electric manual focus function and having a focus operation ring is connected to a camera body having a focus operation key, the system breaks down. An object of the present invention is to provide a camera body, a lens barrel, and a camera system that do not need to be performed. In another invention, when an interchangeable lens unit having a focus operation ring is connected to a camera body having a focus operation key, the convenience of the focus operation can be improved. An object is to provide a camera body, a lens barrel, and a camera system.

  In order to achieve the above object, a camera body according to a first invention includes a mount in which a lens barrel is detachable, an imaging unit for acquiring an image of a subject, and a lens barrel capable of electric manual focusing. A camera body having a body-side operation unit for operating manual focus when mounted, information on whether or not the mounted lens barrel can be electrically operated and manual focus operation. A control unit that acquires lens information including information on whether or not to have a lens-side focus operation unit to be operated from the lens barrel and controls a function assigned to the main-unit operation unit according to the lens information is provided. It is characterized by.

  Accordingly, since necessary functions can be assigned to the operation unit on the camera body side in accordance with the lens barrel mounted on the camera body, system conflicts can be avoided and the convenience of the focus operation can be improved.

  A camera body according to a second aspect of the invention is the camera body according to the first aspect of the invention, wherein the control unit has a lens-side focus operation unit that is capable of electric manual focus and operates a manual focus operation. When the cylinder is mounted, a function for operating an operation different from the manual focus operation is assigned to the main body side operation unit.

  As a result, different functions are assigned to the operation of the camera body side operation unit and the lens side focus operation unit, so that both operations do not compete and the system does not break down. The convenience of operation can be improved.

  A camera body according to a third invention is the camera body according to the first invention, wherein the controller performs an operation different from the manual focus operation when a lens barrel that is not capable of electric manual focus is mounted. The function to be operated is assigned to the operation unit on the main body side.

  As a result, the focus operation command is not issued to the lens barrel that does not support electric manual focus from the main body side operation unit, and the system does not fail. Furthermore, since the operation other than the focus operation is assigned to the camera body side operation unit, the convenience of operation can be improved.

  A camera body according to a fourth aspect is the camera body according to the first aspect, wherein the control unit invalidates the operation of the main body side operation unit when a lens barrel that is not capable of electric manual focus is mounted. It is characterized by.

  As a result, the zoom operation command is not issued to the lens barrel that does not support electric manual focus from the main body side operation unit, and system failure does not occur.

  A camera body according to a fifth aspect of the present invention further includes a finder and a monitor, and has a finder photographing mode for photographing by eye contact with the finder, and a monitor photographing mode for photographing without eye contact with the finder. When shooting in the viewfinder shooting mode, the lens side focus operation unit functions as the manual focus operation unit, and when shooting in monitor shooting mode, the main unit side operation unit functions as the manual focus operation unit. It is characterized by making it.

  This makes it possible to perform a focus operation suitable for the user's shooting posture by making the camera body easy to hold and the focus operation easy.

  A camera body according to a sixth aspect of the invention is the camera body according to the first aspect of the invention, wherein the control unit is capable of electric manual focus and has a lens side focus operation unit for operating a manual focus operation. When the lens barrel is attached, the operation of the lens side focus operation unit is invalidated during the operation of the main body side operation unit.

  This gives priority to the focus operation of the main unit side operation unit, and even when the main unit side operation unit and the lens side operation unit are operated at the same time, the two focus operations will not compete and the system will not break down. Convenience can be improved.

  A camera body according to a seventh invention is the camera body according to the first invention, wherein the control unit is capable of electric manual focus and has a lens side focus operation unit for operating a manual focus operation. When the lens barrel is mounted, the operation of the main body side operation unit is invalidated during the operation of the lens side focus operation unit.

  This gives priority to the focus operation of the lens-side focus operation unit, and even when the main unit-side operation unit and the lens-side operation unit are operated at the same time, the two focus operations will not compete and the system will not break down. Convenience can be improved.

  A camera body according to an eighth invention is the camera body according to any of the first to seventh inventions, comprising a display unit that displays information related to operation of the main body side operation unit, and the control unit is assigned to the operation of the main body side operation unit The content displayed on the display unit is changed in accordance with the given function.

  As a result, the user can visually confirm the function assigned to the operation of the main body side operation unit on a display unit such as an LCD monitor, which may be confused even if a plurality of functions are assigned to the operation of the main body side operation unit. The convenience of the focus operation is improved.

  A camera body according to a ninth invention is characterized in that, in the camera body according to the eighth invention, the control unit invalidates the display corresponding to the function in which the operation of the main body side operation unit is invalidated.

  As a result, the user can easily visually confirm on the display unit such as the LCD monitor that the operation of the operation unit on the main body side is invalid. There is nothing. For example, when a lens barrel that does not support electric manual focus is attached to the camera body, the display on the main body side operation unit may be grayed out or deleted.

  A lens barrel according to a tenth invention is attached to the camera body according to any one of the first to ninth inventions, and information on whether electric manual focus is possible and a lens side for operating a manual focus operation A storage unit is provided that stores lens information including information on whether or not a focus operation unit is provided.

  Thereby, even when a different lens barrel is attached to the camera body, the camera body can acquire necessary lens information from the lens barrel.

  A camera system according to an eleventh aspect includes the camera body according to any one of the first to ninth aspects and the lens barrel according to the tenth aspect.

  Accordingly, since necessary functions can be assigned to the operation unit on the camera body side in accordance with the lens barrel mounted on the camera body, system conflicts can be avoided and the convenience of the focus operation can be improved.

  According to the present invention, there is provided a camera system and a camera body that do not break down when an interchangeable lens unit having an electric manual focus function and having a focus operation ring is connected to the camera body having a focus operation key. can do. According to another invention, when an interchangeable lens unit equipped with an electric manual focus function and having a focus operation ring is connected to a camera body having a focus operation key, the convenience of focus operation can be improved. A camera body, a lens barrel, and a camera system can be provided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
<1: Overall configuration of camera system>
The overall configuration of the camera system 1 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a configuration of a camera system 1 according to the first embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the camera body 3 in the first embodiment of the present invention. 3A and 3B are schematic views of the camera body 3 according to the first embodiment of the present invention. FIG. 3A is a view of the camera body 3 viewed from above, and FIG. 3B is a view of the camera body 3 viewed from the back.

  As shown in FIG. 1, the camera system 1 is an interchangeable lens type digital single-lens reflex camera system. The camera system 1 mainly includes a camera body 3 having the main functions of the camera system 1 and is detachably attached to the camera body 3. And an interchangeable lens unit (lens barrel) 2. The interchangeable lens unit 2 is attached to a body mount 4 provided on the front surface of the camera body 3 via a lens mount 79.

(1.1: Camera body)
As shown in FIGS. 1 and 2, the camera body 3 mainly includes an imaging unit 71 that images a subject, and a body microcomputer (control unit) 10 as a body control unit that controls the operation of each unit such as the imaging unit 71. The image display unit 72 displays captured images and various information, the image storage unit 73 stores image data, and the viewfinder optical system 22 that visually recognizes the subject image.

  The imaging unit 71 mainly includes a quick return mirror 23 that guides incident light to the finder optical system 22 and the focus detection unit 5, an imaging sensor 11 such as a CCD (Charge Coupled Device) that performs photoelectric conversion, and an exposure state of the imaging sensor 11. A shutter unit 33 that adjusts the image, a shutter control unit 31 that controls driving of the shutter unit 33 based on a control signal from the body microcomputer 10, an image sensor drive control unit 12 that controls the operation of the image sensor 11, and a focus ( And a focus detection unit 5 for detecting the in-focus state of the subject image. The focus detection unit 5 performs focus detection by, for example, a general phase difference detection method. The focus detection method is either a phase difference detection method using the focus detection unit 5 described above or a contrast detection method based on an image signal output from the image sensor 11 depending on the use status of the camera system 1. Is used. In the case of the contrast detection method, the body microcomputer 10 obtains a contrast value and detects the focus. That is, it can be said that the body microcomputer 10 includes a contrast detection unit. The focus detection result is transmitted to a lens microcomputer 40 described later, and is used for driving a second lens group (hereinafter also referred to as “focus lens group”) L2.

  The imaging sensor 11 is, for example, a CCD (Charge Coupled Device) sensor that converts an optical image formed by the imaging optical system L into an electrical signal. The image sensor 11 is driven and controlled by a timing signal generated by the image sensor drive control unit 12. The imaging sensor 11 may be a CMOS (Complementary Metal Oxide Semiconductor) sensor.

  The body microcomputer 10 is a control unit that controls the center of the camera body 3 and controls various sequences. Specifically, the body microcomputer 10 is equipped with a CPU, a ROM, and a RAM, and the body microcomputer 10 can realize various functions by reading a program stored in the ROM into the CPU. For example, the body microcomputer 10 acquires information essential for controlling the camera system 1 such as a function of detecting that the interchangeable lens unit 2 is attached to the camera body 3 or focal length information from the interchangeable lens unit 2. A function for controlling the operation of the interchangeable lens unit 2 is provided. Further, the body microcomputer 10 determines whether or not the interchangeable lens unit 2 is compatible with electric manual focus, and if it is compatible with electric manual focus, whether or not the interchangeable lens unit 2 has a focus operation ring. It has a function of acquiring information from the interchangeable lens unit 2. Furthermore, a function for determining whether or not the interchangeable lens unit 2 is compatible with moving image shooting, and a function for setting the operation of the image sensor 11 to the still image shooting mode and the moving image shooting mode via the image sensor drive control unit 12. You may have. As shown in FIG. 1, the body microcomputer 10 is connected to each part provided in the camera body 3.

  The body microcomputer 10 includes a power switch 25, a release button 30, a mode switching dial 26, a cross operation key (main body side operation unit) 27, a MENU setting button 28 and a SET button 29, a viewfinder switching button 34, a moving image shown in FIG. Each of the signals of the shooting operation buttons 35 can be received.

  Furthermore, as shown in FIG. 2, the memory 38 in the body microcomputer 10 stores various information related to the camera body 3. The main body information includes, for example, the model name for identifying the camera main body 3 such as the name of the manufacturer of the camera main body 3, the date of manufacture, the model number, the version of software installed in the body microcomputer 10 and information on firmware upgrade. Contains information about. Note that the memory 38 can store information transmitted from the lens microcomputer 40.

  The body microcomputer 10 controls the entire camera system such as the image sensor 11 in accordance with the operation of the release button 30 or the like. The body microcomputer 10 transmits a vertical synchronization signal to the timing generator. In parallel with this, the body microcomputer 10 generates an exposure synchronization signal based on the vertical synchronization signal. The body microcomputer 10 periodically and repeatedly transmits the generated exposure synchronization signal to the lens microcomputer 40 via the body mount 4 and the lens mount 79.

  Further, the body microcomputer 10 assigns a manual focus operation function to the cross operation key 27, and transmits a focus operation signal based on the operation of the cross operation key to the lens microcomputer 40 via the body mount 4 and the lens mount 79. By sending a command from the microcomputer 40 to the focus lens group drive control unit 41, the focus lens group L2 of the interchangeable lens unit 2 can be moved to the infinity side or the close side. The assignment of the manual focus operation function to the cross operation key 27 is automatically performed in the present embodiment as described later. The manual focus operation function is assigned to the cross operation key 27 by operating the cross operation key 27, the MENU setting button 28, and the SET button 29 so that the manual focus operation function assignment can be switched between valid and invalid. Also good. When the manual focus operation function is assigned to the cross operation key 27, when the operation part 27a of the cross operation key 27 is operated in FIG. 3B, the body microcomputer 10 performs the focus operation based on this operation. A signal is transmitted to the lens microcomputer 40 through the body mount 4 and the lens mount 79, and a command is transmitted from the lens microcomputer 40 to the focus lens group drive control unit 41, thereby bringing the focus lens group L2 of the interchangeable lens unit 2 to the closest side. Move. On the other hand, when the operation part 27b of the cross operation key 27 is operated in FIG. 3B, the body microcomputer 10 sends a focus operation signal to the lens microcomputer 40 via the body mount 4 and the lens mount 79 based on this operation. The lens lens 40 transmits a command to the focus lens group drive control unit 41 to move the focus lens group L2 of the interchangeable lens unit 2 to the infinity side.

  The body mount 4 can be mechanically and electrically connected to the lens mount 79 of the interchangeable lens unit 2. The body mount 4 can transmit and receive data to and from the interchangeable lens unit 2 via the lens mount 79. For example, the body mount 4 transmits the exposure synchronization signal received from the body microcomputer 10 to the lens microcomputer 40 via the lens mount 79. The body mount 4 transmits other control signals received from the body microcomputer 10 to the lens microcomputer 40 via the lens mount 79. The body mount 4 transmits a signal received from the lens microcomputer 40 via the lens mount 79 to the body microcomputer 10. The body mount 4 supplies power supplied from a power supply unit (not shown) to the entire interchangeable lens unit 2 via the lens mount 79.

  As shown in FIG. 3, the housing 3a of the camera body 3 is supported by the user when photographing a subject. On the rear surface of the housing 3a, a display unit 20, a power switch 25, a mode switching dial 26, a cross operation key 27, a MENU setting button 28, a SET button 29, a finder switching button 34, and a video shooting operation are displayed. Button 35 is provided.

  The power switch 25 is a switch for turning on / off the power of the camera system 1 or the camera body 3. When the power is turned on by the power switch 25, power is supplied to each part of the camera body 3 and the interchangeable lens unit 2. The mode switching dial 26 is a dial for switching between a still image shooting mode, a moving image shooting mode, and a reproduction mode, and the user can switch the mode by rotating the mode switching dial 26. When the still image shooting mode is selected with the mode switching dial 26, the shooting mode can be switched to the still image shooting mode. When the moving image shooting mode is selected with the mode switching dial 26, the shooting mode is switched to the moving image shooting mode. be able to. In the movie shooting mode, movie shooting is basically possible. Further, when the playback mode is selected by the mode switching dial 26, the mode can be switched to the playback mode, and the captured image can be displayed on the display unit 20.

  The MENU setting button 28 is a button for setting various operations of the camera system 1. The cross operation key 27 is an operation member for the user to select a desired menu from various menu screens displayed on the display unit 20 by pressing the upper, lower, left, and right parts. The SET button 29 is a button for confirming execution of various menus. The finder switching button 34 is a button for switching between a finder photographing mode and a monitor photographing mode (the finder photographing mode and the monitor photographing mode will be described later). The moving image shooting operation button 35 is a button for instructing start and stop of moving image shooting. Even when the shooting mode set in the mode switching dial 26 is the still image shooting mode or the playback mode, the moving image shooting operation button 35 is pressed. By pushing, the moving image shooting mode is forcibly started regardless of the setting contents in the mode switching dial 26. Further, when the moving image shooting operation button 35 is pressed in the moving image shooting mode, the moving image shooting is ended, and the mode is shifted to the still image shooting mode or the reproduction mode.

  As shown in FIG. 3B, a release button 30 is provided on the upper surface of the housing 3a. When the release button 30 is operated, a timing signal is output to the body microcomputer 10. The release button 30 is a two-stage switch that can be pressed halfway and fully. When the user presses the release button 30 halfway, photometric processing and distance measurement processing are started. Further, by this half-pressing operation, power is supplied to each part including the body microcomputer 10 and the lens microcomputer 40. Subsequently, when the user fully presses the release button 30, a timing signal is output to the body microcomputer 10. The shutter control unit 31 drives the shutter drive motor 32 and operates the shutter unit 33 according to the control signal output from the body microcomputer 10 that has received the timing signal.

  As shown in FIG. 2, in the still image shooting mode, the body microcomputer 10 that has received the timing signal by operating the release button 30 outputs a control signal to the strobe controller 47. Then, the strobe controller 47 causes the strobe 48 composed of LEDs or the like to emit light based on the control signal. The strobe 48 is controlled according to the amount of light received by the image sensor 11. That is, the strobe control unit 47 automatically emits light in conjunction with the shutter operation when the output of the image signal from the imaging sensor 11 is a predetermined value or less. On the other hand, when the output of the image signal is equal to or greater than a certain value, the strobe control unit 47 performs control so that the strobe 48 does not emit light.

  The strobe switch 49 is an operation unit for setting the operation of the strobe 48 regardless of the output of the imaging sensor 11 described above. That is, the strobe controller 47 causes the strobe 48 to emit light when the strobe switch 49 is “ON”, and does not cause the strobe 48 to emit light when it is “OFF”.

  Further, in the moving image shooting mode, the strobe 48 constituted by an LED or the like functions as a video light by operating the release button 30 or the moving image shooting operation button 35, and the light is directed toward the subject during moving image shooting. Irradiate.

  The image signal (still image or moving image) output from the image sensor 11 is sequentially transferred from the analog signal processing unit 13 to the A / D conversion unit 14, the digital signal processing unit 15, the buffer memory 16, and the image compression unit 17. Sent and processed. The analog signal processing unit 13 performs analog signal processing such as gamma processing on the image signal output from the imaging sensor 11. The A / D conversion unit 14 converts the analog signal output from the analog signal processing unit 13 into a digital signal. The digital signal processing unit 15 performs digital signal processing such as noise removal and edge enhancement on the image signal converted into a digital signal by the A / D conversion unit 14. The buffer memory 16 is a RAM and temporarily stores an image signal.

  The image signals stored in the buffer memory 16 are sequentially sent from the image compression unit 17 to the image recording unit 18 for processing. The image signal stored in the buffer memory 16 is read by a command from the image recording control unit 19 and transmitted to the image compression unit 17. The image signal data transmitted to the image compression unit 17 is compressed in accordance with a command from the image recording control unit 19. The image signal has a smaller data size than the original data by this compression processing. As such a compression method, in the case of a still image, for example, a JPEG (Joint Photographic Experts Group) method is used. In the case of moving images, for example, a moving picture experts group (MPEG) method is used. The compressed image signal is recorded in the image recording unit 18 by the image recording control unit 19.

  The image recording unit 18 is, for example, an internal memory and / or a removable memory that records an image signal in association with predetermined information to be recorded based on a command from the image recording control unit 19. Note that the predetermined information to be recorded together with the image signal includes date and time when the image was captured, focal length information, shutter speed information, aperture value information, shooting mode information, and the like. The format of these information is, for example, a format similar to the Exif (registered trademark) format or the Exif (registered trademark) format.

  The display unit 20 is a liquid crystal monitor, for example, and displays an image signal recorded in the image recording unit 18 or the buffer memory 16 as a visible image based on a command from the image display control unit 21. Here, the display form of the display unit 20 includes a display form in which only an image signal is displayed as a visible image, and a display form in which the image signal and information at the time of shooting are displayed as a visible image. The display unit 20 may be a variable angle monitor that can freely change the angle with respect to the housing 3 a of the camera body 3.

  As shown in FIG. 1, the quick return mirror 23 includes a main mirror 23a that can reflect and transmit incident light, and a sub mirror 23b that is provided on the back side of the main mirror 23a and reflects transmitted light from the main mirror 23a. The quick return mirror control unit 36 can be flipped up outside the optical axis AZ. The incident light is divided into two light beams by the main mirror 23 a, and the reflected light beam is guided to the finder optical system 22. On the other hand, the transmitted light beam is reflected by the sub mirror 23 b and used as the AF light beam of the focus detection unit 5. During normal shooting, the quick return mirror control unit 36 causes the quick return mirror 23 to jump up outside the optical axis AZ, and the shutter unit 33 is opened to form a subject image on the imaging surface of the imaging sensor 11. . When not photographing, the quick return mirror 23 is disposed on the optical axis AZ as shown in FIG. 1, and the shutter unit 33 is closed.

  The finder optical system 22 includes a finder screen 6 on which a subject image is formed, a pentaprism 7 that converts the subject image into an erect image, an eyepiece lens 8 that guides the erect image of the subject to the finder eyepiece window 9, and the user It is composed of a finder eyepiece window 9 for observing an image.

(1.2: Interchangeable lens unit)
As shown in FIG. 1, the interchangeable lens unit 2 mainly includes an imaging optical system L for connecting a subject image to the imaging sensor 11 in the camera system 1, a zoom lens group drive control unit 61 that changes the imaging magnification, The focus lens group drive control unit 41 that performs focusing, the aperture drive control unit 42 that adjusts the aperture, and the lens microcomputer 40 that controls the operation of the interchangeable lens unit 2 are configured.

  The zoom lens group drive control unit 61 drives and controls a first lens group (hereinafter also referred to as “zoom lens group”) L1 that adjusts the photographing magnification to the telephoto side or the wide angle side. The focus lens group drive control unit 41 mainly drives and controls a later-described second lens group L2 that adjusts the focus. The aperture drive control unit 42 controls the drive of the aperture unit 43 that mainly adjusts the aperture or opening.

  The lens microcomputer 40 is a control device that controls the center of the interchangeable lens unit 2, and is connected to each part mounted on the interchangeable lens unit 2. Specifically, the lens microcomputer 40 is equipped with a CPU, a ROM, and a RAM, and various functions can be realized by reading a program stored in the ROM into the CPU. In addition, the body microcomputer 10 and the lens microcomputer 40 are electrically connected via an electrical section (not shown) provided in the lens mount 79, so that information can be transmitted and received between them.

  In addition, the interchangeable lens unit 2 includes a focus ring 67 that is a lens side focus operation unit, and a rotation detection unit 68 that detects a rotation amount and a rotation direction of the focus ring 67. The focus ring 67 is a ring that adjusts the focus position to the infinity side or the close side by rotating the ring. By operating the focus ring 67, the rotation detection unit 68 detects that it is operated to the infinity side or the close side, and transmits the operation information to the lens microcomputer 40. When the lens microcomputer 40 detects that the operation information is operated on the infinity side, the lens microcomputer 40 moves and controls the focus lens group L2 to the infinity side via the focus lens group drive control unit 41. On the other hand, when the lens microcomputer 40 detects that the operation information is operated on the close side, the focus lens group L2 is moved and controlled to the close side via the focus lens group drive control unit 41. Further, information regarding the object point distance that changes in accordance with the movement of the focus lens group L2 is transmitted from the lens microcomputer 40 to the body microcomputer 10 via the lens mount 79 and the body mount 4.

  The memory 44 in the lens microcomputer 40 stores various information (lens information) related to the interchangeable lens unit 2. Specific contents of the various information will be described later. The various information stored in the memory 44 is sent to the camera body 3 when the interchangeable lens unit 2 is attached to the camera body 3 for use during shooting.

(1.3: Information on interchangeable lens units)
Here, information regarding the interchangeable lens unit 2 will be described. Various information (lens information) about the interchangeable lens unit 2 is stored in the memory 44 in the lens microcomputer 40. Specifically, focal length information indicating the maximum value and minimum value (focal length variable range) of the interchangeable lens unit 2, object point distance information, or the like is stored in the memory 44.

  Further, the memory 44 stores information regarding whether or not the interchangeable lens unit 2 is compatible with the above-described moving image shooting. This information is recorded at a predetermined address in the memory 44 (for example, a spare address that is not normally used).

  As a criterion for determining whether or not the interchangeable lens unit 2 is compatible with moving image shooting, for example, it is conceivable whether or not the second lens group L2 as the focus lens group is capable of wobbling (micro reciprocating vibration). If the second lens unit L2 is supported by a guide pole and the second lens unit L2 is directly driven by an ultrasonic actuator or the like, it can be determined that wobbling is possible. Accordingly, a driving method of the second lens unit L2 is also conceivable as information regarding whether or not the interchangeable lens unit 2 is compatible with moving image shooting.

  Furthermore, when the focus lens group is wobbled, a configuration in which the magnification change amount of the image on the image sensor 11 is equal to or less than a predetermined value can also be a criterion for determining whether or not movie shooting is supported. For this reason, such information is also conceivable as information regarding whether or not the interchangeable lens unit 2 is compatible with moving image shooting.

  In addition, being able to handle moving image shooting means that the interchangeable lens unit 2 is compatible with a contrast detection method. Therefore, as information regarding whether or not the interchangeable lens unit 2 is compatible with moving image shooting, information regarding whether or not the contrast detection method can be considered is also conceivable.

  Further, information regarding whether or not the interchangeable lens unit 2 is compatible with the electric manual focus and information regarding whether or not the focus ring 67 for operating the electric manual focus is provided are also stored in the memory 44. ing. The case where the electric manual focus is supported is a case where the focus lens group L2 is moved and controlled by the focus lens group drive control unit 41 in accordance with the rotation operation of the focus ring 67. The function itself of the focus lens group L2 being moved by the focus lens group drive control unit 41 is a function originally provided for autofocus, and this function is switched and used during manual focus. The focus lens group L2 may be driven by a stepping motor, a DC motor, an electromagnetic linear motor, an ultrasonic motor, or the like. The focus lens group drive control unit 41 supplies power to these actuators and actuators for speed or position. It consists of a circuit that performs control.

  When these pieces of information are stored in the interchangeable lens unit 2, when the interchangeable lens unit 2 is attached to the camera body 3, these pieces of information are acquired by the body microcomputer 10 on the camera body 3 side, It is determined whether or not photographing is possible, whether or not electric manual focus is supported, and whether or not the focus ring 67 is provided. Further, the focus speed, minimum resolution, and the like may be individually stored according to the performance of the focus lens group driving actuator such as an ultrasonic actuator, and the optimum focus performance may be set in combination with the camera body 3. For example, according to the focus performance, the camera system 1 can automatically set the frame rate (30 fps, 60 fps, etc.) at the time of moving image shooting, the number of recording pixels, and the like.

<2: Operation of the camera system>
Hereinafter, the photographing operation of the camera system 1 configured as described above will be described.

  4 and 5 are conceptual diagrams at the time of imaging with the camera system 1, FIG. 4 is a diagram for explaining a finder photographing mode in the first embodiment of the present invention, and FIG. 5 is a diagram in the first embodiment of the present invention. It is a figure explaining monitor photography mode (image display photography mode).

(2.1: State before imaging)
As shown in FIGS. 1, 4 and 5, light from a subject (not shown) passes through the interchangeable lens unit 2 and enters a main mirror 23a which is a semi-transmissive mirror. A part of the light incident on the main mirror 23a is reflected and incident on the finder screen 6, and the remaining light is transmitted and incident on the sub mirror 23b. The light incident on the finder screen 6 is formed as a subject image. This subject image is converted into an erect image by the pentaprism 7 and enters the eyepiece 8. Thus, the user can observe an erect image of the subject through the finder eyepiece window 9. Further, the light incident on the sub mirror 23 b is reflected and enters the focus detection unit 5.

(2.2: Viewfinder shooting mode and monitor shooting mode)
The camera system 1 has two shooting modes, that is, a finder shooting mode and a monitor shooting mode. The viewfinder shooting mode is a mode in which the user takes a picture while observing the viewfinder eyepiece window 9, and is a normal shooting mode in a conventional single-lens reflex camera. The monitor photographing mode is a mode in which a user photographs while observing the display unit 20 such as a liquid crystal monitor.

  In the finder photographing mode, as shown in FIG. 4, the quick return mirror 23 is disposed at a predetermined position in the optical axis AZ, and the subject light is guided to the finder optical system 22, so that the user can view the finder eyepiece. A subject image can be observed from the window 9. During actual photographing, the quick return mirror 23 is flipped up outside the optical axis AZ, and the shutter unit 33 is opened to form a subject image on the imaging surface of the imaging sensor 11.

  On the other hand, in the monitor photographing mode, the quick return mirror 23 is retracted from the optical axis AZ as shown in FIG. Therefore, an image of the subject, a so-called through image, is displayed on the display unit 20 via the imaging sensor 11.

(2.3: Operation in viewfinder shooting mode)
The shooting operation of the camera system 1 will be described. A driving sequence in the finder photographing mode in which the user shoots through the finder eyepiece window 9 will be described with reference to FIGS.

  When shooting in the finder shooting mode, the user operates the finder switching button 34 provided on the back surface of the housing 3a to select the finder shooting mode as the shooting mode.

  When the user presses the release button 30 halfway, power is supplied to the body microcomputer 10 and various units in the camera system 1. The body microcomputer 10 in the camera system 1 that is activated by power supply receives various lens data from the lens microcomputer 40 in the interchangeable lens unit 2 that is also activated by power supply via the lens mount 79 and the body mount 4, and is built in. Is stored in the memory 38. Next, the body microcomputer 10 acquires a defocus amount (hereinafter referred to as “Df amount”) from the focus detection unit 5 and instructs the lens microcomputer 40 to drive the focus lens group L2 by the Df amount. . The lens microcomputer 40 controls the focus lens group drive control unit 41 to operate the second lens group L2 by the amount of Df. As described above, while the focus detection and the driving of the second lens group L2 are repeated, the Df amount becomes small, and when it becomes equal to or less than the predetermined amount, the body microcomputer 10 determines that it is in focus, and the second lens group L2 is driven. Is stopped.

  Thereafter, when the release button 30 is fully pressed by the user, the body microcomputer 10 instructs the lens microcomputer 40 to set the aperture value to an aperture value calculated based on an output from a photometric sensor (not shown). . Then, the lens microcomputer 40 controls the aperture drive control unit 42 to narrow the aperture to the instructed aperture value. Simultaneously with the aperture value instruction, the body microcomputer 10 causes the quick return mirror controller 36 to retract the quick return mirror 23 from the optical axis AZ. After the retraction of the quick return mirror 23 is completed, the imaging sensor drive control unit 12 instructs to drive the imaging sensor 11 and instructs the operation of the shutter unit 33. The image sensor drive control unit 12 exposes the image sensor 11 for the time of the shutter speed calculated based on an output from a photometric sensor (not shown).

  After the exposure is completed, the image data read from the image sensor 11 by the image sensor drive control unit 12 is displayed as a captured image on the display unit 20 after executing predetermined image processing. The image data read from the image sensor 11 and subjected to predetermined image processing is written as image data in a storage medium via the image recording unit 18. Further, after the exposure is completed, the quick return mirror 23 and the shutter unit 33 are reset to the initial positions. The body microcomputer 10 instructs the lens microcomputer 40 to reset the aperture to the open position, and the lens microcomputer 40 issues a reset command to each unit. After the reset is completed, the lens microcomputer 40 notifies the reset to the body microcomputer 10. The body microcomputer 10 waits for the reset completion information from the lens microcomputer 40 and the completion of the series of processes after exposure, and then confirms that the state of the release button 30 is not depressed and ends the photographing sequence. .

(2.4: Monitor shooting mode operation)
Next, a drive sequence in the monitor photographing mode in which the user photographs using the display unit 20 will be described with reference to FIGS. 1 to 3 and FIG.

  When shooting using the display unit 20, the user operates the finder switching button 34 to select the monitor shooting mode. When the monitor photographing mode is set, the body microcomputer 10 retracts the quick return mirror 23 from the optical axis AZ. Thereby, light from the subject reaches the image sensor 11. The imaging sensor 11 can convert light from a subject imaged on the imaging sensor 11 into image data, obtain it as image data, and output it. Image data read from the imaging sensor 11 by the imaging sensor drive control unit 12 is displayed as a captured image on the display unit 20 after predetermined image processing is executed. In this way, by displaying the captured image on the display unit 20, the user can follow the subject without looking through the viewfinder eyepiece window 9.

  As for the monitor photographing mode, when the moving image photographing mode is selected by the mode switching dial 26, the monitor photographing mode is automatically shifted to the monitor photographing mode. Further, when the moving image shooting operation button 35 is pressed, the monitor shooting mode is automatically entered. Further, in a camera such as an LCD monitor in which the display unit 20 is openable / closable, when the user opens the display unit 20, the monitor photographing mode may be automatically shifted.

  In this monitor photographing mode, as a focusing method, contrast-type autofocus is used based on image data generated by the image sensor 11 instead of the phase difference detection method using the focus detection unit 5. By using a contrast method as a method of autofocus operation in the monitor photographing mode using the display unit 20, a highly accurate focus operation can be realized as a camera system. In this monitor photographing mode, since image data is constantly generated by the image sensor 11, it is easier to perform a contrast-type autofocus operation using the image data than in the conventional phase difference detection method. is there.

  Here, the autofocus operation using the contrast method will be described.

  When performing the contrast autofocus operation, the body microcomputer 10 requests the lens microcomputer 40 for data for contrast AF. The contrast AF data is necessary for the contrast autofocus operation, and includes, for example, a focus drive speed, a focus shift amount, an image magnification, and contrast AF availability information.

  The body microcomputer 10 periodically generates a vertical synchronization signal. In parallel with this, the body microcomputer 10 generates an exposure synchronization signal based on the vertical synchronization signal. This is because the body microcomputer 10 knows in advance the exposure start timing and the exposure end timing with reference to the vertical synchronization signal, so that the exposure synchronization signal can be generated. The body microcomputer 10 outputs a vertical synchronization signal to a timing generator (not shown) and outputs an exposure synchronization signal to the lens microcomputer 40. The lens microcomputer 40 acquires position information of the second lens group L2 in synchronization with the exposure synchronization signal.

  The image sensor drive control unit 12 periodically generates a readout signal and an electronic shutter drive signal from the image sensor 11 based on the vertical synchronization signal. The image sensor drive control unit 12 drives the image sensor 11 based on the readout signal and the electronic shutter drive signal. That is, the imaging sensor 11 reads out pixel data generated by a large number of photoelectric conversion elements (not shown) in the imaging sensor 11 to a vertical transfer unit (not shown) in accordance with the readout signal.

  In the still image shooting mode, the body microcomputer 10 of the camera system 1 is moved from the lens microcomputer 40 in the interchangeable lens unit 2 via the lens mount 79 and the body mount 4 by the user's half-pressing operation of the release button 30. Various lens data are received and stored in the built-in memory 38. The body microcomputer 10 transmits an autofocus start command to the lens microcomputer 40. When the release button 30 is pressed halfway, the autofocus start command is a command indicating that the contrast type autofocus operation is started. Based on this command, the lens microcomputer 40 drives and controls the second lens group L2 in the direction along the optical axis AZ. The body microcomputer 10 calculates an evaluation value for autofocus operation (hereinafter referred to as “AF evaluation value”) based on the received image data. Specifically, a method is known in which a luminance signal is obtained from image data generated by the image sensor 11, and high-frequency components in the screen of the luminance signal are integrated to obtain an AF evaluation value. The calculated AF evaluation value is stored in a DRAM (not shown) in a state associated with the exposure synchronization signal. The lens position information acquired from the lens microcomputer 40 is also associated with the exposure synchronization signal. Therefore, the body microcomputer 10 can store the AF evaluation value in association with the lens position information.

  Next, the body microcomputer 10 obtains a contrast peak based on the AF evaluation value stored in the DRAM and monitors whether or not the in-focus point has been extracted. Specifically, the position of the second lens unit L2 at which the AF evaluation value is a maximum value is extracted as the focal point. As this lens driving method, a hill-climbing method is generally known.

  In this state, the camera system 1 displays the image indicated by the image data generated by the imaging sensor 11 on the display unit 20 as a through image. Since the through image is displayed as a moving image on the display unit 20, the user can determine a composition for capturing a still image while viewing the display unit 20.

  Thereafter, when the release button 30 is fully pressed by the user, the body microcomputer 10 instructs the lens microcomputer 40 to set the aperture value to the aperture value calculated based on the output from the photometric sensor (not shown). To do. Then, the lens microcomputer 40 controls the aperture drive control unit 42 to narrow the aperture to the instructed aperture value. The imaging sensor drive control unit 12 instructs driving of the imaging sensor 11 and instructs the operation of the shutter unit 33. Note that the imaging sensor drive control unit 12 exposes the imaging sensor 11 for a predetermined shutter speed time calculated from the output of the imaging sensor 11.

  After the exposure is completed, the image data read from the image sensor 11 by the image sensor drive control unit 12 is displayed as a captured image on the display unit 20 after executing predetermined image processing. The image data read from the image sensor 11 and subjected to predetermined image processing is written as image data in a storage medium via the image recording unit 18. Moreover, since the quick return mirror 23 is located in the state retracted from the optical axis AZ after the exposure is completed, the user can continuously view the subject as a captured image on the display unit 20 in the monitor imaging mode. it can.

  Similarly, in the moving image shooting mode, moving image recording can be performed by the user's full pressing operation of the release button 30. In any mode, the moving image recording operation button 35 can be pressed to record a moving image. Furthermore, when the interchangeable lens unit 2 is compatible with moving image shooting, when the interchangeable lens unit 2 is attached to the camera body 3, it may be automatically shifted to the moving image shooting mode.

  Further, when canceling the monitor photographing mode, the user operates the finder switching button 34 to shift to the finder photographing mode in which the photographing is performed while looking through the finder eyepiece window 9. When the mode is switched to the finder photographing mode, the quick return mirror 23 is returned to a predetermined position in the optical axis AZ. Also, when the power source of the camera system 1 is turned off, the quick return mirror 23 is returned to a predetermined position in the optical axis AZ.

(2.5: Focusing operation)
Next, the focus operation of the camera system 1 will be described. The camera system 1 has two focus modes, an autofocus shooting mode and a manual shooting mode. There are two types of manual shooting modes: manual manual and electric manual. The manual manual moves the focus lens mechanically according to the rotation of the focus ring, and the electric manual converts the rotation of the focus ring into an electrical signal and then drives the motor etc. with this electrical signal to focus lens Is to move. In the following description, manual focus refers to electric manual focus.

  The user sets a predetermined shooting mode using an auto shooting mode or manual shooting mode setting button (not shown) provided in the interchangeable lens unit 2 or the camera body 3.

  In the auto shooting mode, the lens microcomputer 40 transmits a control signal to the focus lens group drive control unit 41 in response to the half-pressing operation of the release button 30 or the operation of the moving image shooting operation button 35, and the focus lens group L2. Slightly move. The body microcomputer 10 transmits a command to the digital signal processing unit 15. The digital signal processing unit 15 transmits an image signal to the body microcomputer 10 at a predetermined timing based on the received command. The body microcomputer 10 determines the optical axis AZ of the second lens group L2 in which the imaging optical system L is in focus based on the received image signal and the focal length information previously received from the rotation detection unit 65 of the zoom ring 64. The amount of movement in the direction along is calculated. The body microcomputer 10 generates a control signal based on the calculation result. The body microcomputer 10 transmits a control signal to the focus lens group drive control unit 41.

  The focus lens group drive control unit 41 automatically moves the focus lens group L2 in the Z-axis direction based on a control signal from the body microcomputer 10.

  As described above, focusing in the autofocus shooting mode of the camera body 3 or the interchangeable lens unit 2 is performed. The above operation is executed instantaneously after the user half-presses the release button 30 or the moving image shooting operation button 35. When the user fully presses the release button 30 or operates the moving image shooting operation button 35, the body microcomputer 10 executes a shooting process and transmits a control signal to the image recording control unit 19 when shooting is completed. The image recording unit 18 records the image signal in the internal memory and / or the removable memory based on a command from the image recording control unit 19. Based on a command from the image recording control unit 19, the image recording unit 18 records information indicating that the shooting mode is the autofocus shooting mode together with the image signal in the internal memory and / or the removable memory.

  On the other hand, in the manual focus shooting mode, the lens microcomputer 40 requests rotation information from the rotation detector 68 of the focus ring 67. The lens microcomputer 40 generates a control signal for moving the second lens group L2 based on the rotation information of the focus ring 67. The lens microcomputer 40 transmits the generated control signal to the focus lens group drive control unit 41.

  The focus lens group drive control unit 41 moves the focus lens group L2 in the Z-axis direction based on a control signal from the lens microcomputer 40 in accordance with the rotation amount and rotation direction of the focus ring 67.

  As described above, focusing in the manual focus mode of the camera system 1 is performed. When the user fully presses the release button 30 or operates the moving image shooting operation button 35 in the manual focus mode, shooting is performed in that state.

  The body microcomputer 10 transmits a control signal to the image recording control unit 19 when photographing is completed. The image recording unit 18 records the image signal in the internal memory and / or the removable memory based on a command from the image recording control unit 19. Based on a command from the image recording control unit 19, the image recording unit 18 records information indicating that the shooting mode is the manual focus mode together with the image signal in the internal memory and / or the removable memory.

(2.6: Focus operation function selection operation)
Now, there is no problem when autofocus is selected as the focus mode, but the interchangeable lens unit 2 is compatible with the electric manual focus, and when focusing is performed manually during shooting, and the interchangeable lens unit 2 side is also electrically operated. When the focus ring 67 for operating the manual focus is provided, there arises a problem of whether to use the operation unit on the camera system 1 main body side or the operation unit on the interchangeable lens unit 2 side.

  Next, a method for selecting a focus operation function when various interchangeable lens units 2 are attached to the camera body 3 will be described with reference to FIGS. FIG. 6 is a flowchart showing a procedure for selecting a focus function in the first embodiment of the present invention. 7A and 7B are display examples of the display unit 20 of the camera body 3 according to the first embodiment of the present invention. FIG. 7A is a display example when the interchangeable lens unit 2 supports electric manual focus, and FIG. 7B is an interchangeable lens. It is a figure which shows the example of a display when the unit 2 does not respond | correspond to electric manual focus. As shown in FIG. 6, first, the body microcomputer 10 of the camera body 3 determines whether or not the interchangeable lens unit 2 is attached (step S1). When it is determined that the interchangeable lens unit 2 is attached, lens information stored in the memory 44 of the interchangeable lens unit 2 is acquired from the body microcomputer 10 (step S2). Based on the acquired lens information, the body microcomputer 10 determines whether or not the interchangeable lens unit 2 is compatible with the electric manual focus function (step S3).

  When the interchangeable lens unit 2 is compatible with the electric manual focus function, the focus operation function is assigned to the cross operation key 27 (step S4). Next, it is displayed that the electric manual focus operation is valid (step S5). Here, as shown in FIG. 7A, the function of changing the focus position in the direction of the closest side (5 cm) is assigned to the operation of the operation portion 27a of the cross operation key 27, and the display state 20a of the display unit 20 is assigned. As shown, the operation direction toward the closest side (5 cm) is indicated by a button-shaped display. On the other hand, a function for changing the focus position toward the infinity side (∞) is assigned to the operation of the operation part 27b of the cross operation key 27, and the infinity side (∞) is displayed as shown in the display state 20a of the display unit 20. The button shape indicating the operation direction is indicated by highlighting.

  If the interchangeable lens unit 2 does not support the electric manual focus function, the assignment of the focus operation function to the cross operation key 27 is invalidated (step S6). Next, it is displayed that the electric manual focus operation is invalid (step S7). Here, the focus operation function selection process is terminated. Here, as shown in FIG. 7B, the focus operation function of the cross operation key 27 is disabled, so that the close side (5 cm) and the infinity side (as shown in the display state 20b of the display unit 20) The button shape indicating the operation direction to ∞) is grayed out (unusable display).

  In the process of step S7, the fact that the focus operation function is invalid is displayed, but it may be hidden.

  Next, in the case of the interchangeable lens unit 2 compatible with the electric manual focus, a determination process is performed to determine whether or not the interchangeable lens unit 2 has the focus ring 67 (step S8). When the interchangeable lens unit 2 does not have the focus ring 67, the focus operation function selection process is terminated. If the interchangeable lens unit 2 has a focus ring, the focus ring is enabled (step S9). Specifically, as described above, by operating the focus ring 67, the rotation detection unit 68 detects that it has been operated to the infinity side or the close side, and the operation information is sent to the lens microcomputer 40. introduce. When the lens microcomputer 40 detects that the operation information is operated on the infinity side, the lens microcomputer 40 moves and controls the focus lens group L2 to the infinity side via the focus lens group drive control unit 41. On the other hand, when the lens microcomputer 40 detects that the operation information is operated on the close side, the focus lens group L2 is moved and controlled to the close side via the focus lens group drive control unit 41. Further, information regarding the object point distance that changes in accordance with the movement of the focus lens group L2 is transmitted from the lens microcomputer 40 to the body microcomputer 10 via the lens mount 79 and the body mount 4.

(2.7: Focus operation selection operation)
In the camera main body 3, the processing in the body microcomputer 10 in the camera main body 3 is selected as to which of the focus ring 67 mounted on the interchangeable lens unit 2 and the cross operation key 27 mounted on the camera main body 3 is selected. 8 will be used for explanation. FIG. 8 shows a process for selecting which of the focus ring 67 mounted on the interchangeable lens unit 2 of the camera system 1 and the cross operation key 27 mounted on the camera body 3 in the first embodiment of the present invention. It is a flowchart which shows a specific operation | movement flow.

  As shown in FIG. 8, when the user first operates the finder switching button 34 provided on the back surface of the housing 3a to shoot as a finder shooting mode (hereinafter also referred to as “EVF mode”), or the monitor A case of shooting as a shooting mode (hereinafter also referred to as “LCD mode”) is selected (step S11). If the EVF mode is selected, the process proceeds to step S12. On the other hand, if the LCD mode is selected, the process proceeds to step S14.

  When the EVF mode is selected, the focus ring 67 mounted on the interchangeable lens unit 2 is validated (step S12). Next, the fact that the focus ring 67 is valid is displayed, for example, on the display unit 20 (step S13), and the process is terminated. When the LCD mode is selected, the cross operation key 27 mounted on the camera body 3 is validated (step S14). Next, the fact that the cross operation key 27 is valid is displayed, for example, on the display unit 20 (step S15), and the process is terminated.

  As described above, when the camera body 3 has the focus operation function in both the interchangeable lens unit 2 and the camera body 3, the focus ring 67 on the interchangeable lens unit 2 side is changed depending on whether the shooting mode is the EVF mode or the LCD mode. Judgment processing is performed as to whether to select or to select the cross operation key 27 on the camera body 3 side.

  As described above, in the first embodiment of the present invention, the focus ring 67 mounted on the interchangeable lens unit 2 side is selected under the condition that the user takes an image while observing the eyepiece window 9 as in the EVF mode. Set the focus operation. In the EVF mode, for example, the camera body 3 is supported with the right hand and the interchangeable lens unit 2 is supported with the left hand, so the focus ring 67 on the interchangeable lens unit 2 side is operated in a stable state while supporting the interchangeable lens unit 2 with the left hand. Thus, the focus operation can be performed. On the other hand, under the condition of taking a picture while looking at the display unit 20 while looking away from the camera body 3 as in the LCD mode, the cross operation key 27 mounted on the camera body 3 side is selected and the focus operation is performed. Set. In the LCD mode, since the camera body 3 is taken away from the camera, the left and right hands do not hang on the interchangeable lens unit 2, and the camera body 3 is held with both hands, so the camera body 3 is supported with the right hand. The focus operation can be performed by operating the cross operation key 27 on the camera body 3 side in a stable state.

  In the above description, the user operates the finder switching button 34 provided on the back surface of the housing 3a to select the EVF mode or the LCD mode. It is not limited. For example, an eyepiece detection unit (not shown) that detects whether or not the user has touched the eyepiece eyepiece 9 near the finder eyepiece window 9 may be provided, and the photographing mode may be switched based on information from the eyepiece detection unit. . In this way, since the user does not need to manually select the shooting mode, quick switching is possible even when shooting in the LCD mode and suddenly switching to the EVF mode.

(2.8: Selection operation of the focus ring on the lens side and the focus operation key on the main body side)
Here, the selection operation of the focus operation keys on the lens side and the camera body when the interchangeable lens unit 2 corresponding to the electric manual focus and having the focus ring 67 is attached to the camera body 3 will be described.

  When the user changes the focus position, the focus ring 67 mounted on the interchangeable lens unit 2 is operated to change the focus position, and the cross operation key 27 (focus operation function assignment) mounted on the camera body 3 is used. It may be possible to change the focus position by operating. At this time, when both the focus operation units are operated simultaneously, the focus functions compete and the system breaks down. Therefore, a method for stably operating the focus operation function without causing the system to fail even when both the focus operation units are operated simultaneously will be described below.

  First, a case where priority is given to the cross operation key 27 mounted on the camera body 3 will be described with reference to FIG. FIG. 9 is a process flowchart of the camera body 3 regarding the focus operation unit selection of the electric manual focus function according to the first embodiment of the present invention (cross operation key 27 has priority). As shown in FIG. 9, first, it is determined whether or not the focus operation with the cross operation key 27 is performed by the body microcomputer 10 of the camera body 3 (step S21). When it is determined that the focus operation with the cross operation key 27 is performed, the focus operation is performed with the focus operation of the cross operation key 27 (step S23). Thereafter, the process returns to the process of step S21, but the focus operation with the cross operation key 27 is continued by the user (the operation lens is kept pressed, or once the operation key is pressed, the focus lens is moved to a predetermined focus position. In the case where the group L2 continues to be moved), the processes of steps S21 and S23 are repeated. This series of processing is executed by, for example, loop processing that is processed at intervals of 1 ms.

  If it is determined in step S21 that the focus operation with the cross operation key 27 is not performed, it is determined whether or not the focus operation with the focus ring 67 mounted on the interchangeable lens unit 2 is performed. Determination is made (step S22). When it is detected that the focus operation with the focus ring 67 is being performed, the focus operation is performed by the focus operation with the focus ring 67 (step S24). Thereafter, the process returns to step S21. However, the focus operation with the focus ring 67, not the cross operation key 27, is continued by the user (the focus ring has been kept rotating or once rotated once. In the case where the focus lens group L2 is continuously moved to a predetermined focus position when the angle is rotated, the processes of steps S21, S22, and S24 are repeated. This series of processing is executed by, for example, loop processing that is processed at intervals of 1 ms.

  If it is determined in step S22 that the focus operation with the focus ring 67 has not been performed, that is, neither the cross operation key 27 nor the focus ring 67 has been operated, the focus operation is stopped ( Step S25). As described above, if the cross operation key 27 or the focus ring 67 to which the focus operation function is assigned is rotated to a certain rotation angle, the focus lens group L2 is continuously moved to a predetermined focus position. Until the process is completed, an exception process for continuing the focus operation may be executed. Even when the processes of steps S21, S22, and S25 are repeated, this series of processes is executed in a loop process that is processed at intervals of 1 ms, for example.

  As described with reference to FIG. 9, when the user changes the focus position, the focus ring 67 mounted on the interchangeable lens unit 2 is operated to change the focus position, and the cross mounted on the camera body 3. Even when operating the operation key 27 (assigning the focus operation function) to change the focus position, the focus operation functions on the lens side and the main body side do not conflict with each other, and both the focus operation units are operated simultaneously. In addition, the focus operation function can be stably operated. In particular, here, the case where the cross operation key 27 (focus operation function assignment) mounted on the camera body 3 is preferentially operated for focus operation has been described. Therefore, during the focus operation with the cross operation key 27, even if the focus operation is performed with the focus ring 67 of the interchangeable lens unit 2, the operation of the cross operation key 27 has priority.

  Next, a case where priority is given to the focus ring 67 mounted on the interchangeable lens unit 2 will be described with reference to FIG. FIG. 10 is a process flowchart (focus ring 67 priority) of the camera body regarding the focus operation unit selection of the electric manual focus function in the first embodiment of the present invention. As shown in FIG. 10, first, it is determined by the body microcomputer 10 of the camera body 3 whether or not a focus operation is being performed on the focus ring 67 of the interchangeable lens unit 2 (step S31). When it is determined that the focus operation with the focus ring 67 is performed, the focus operation is performed with the focus operation of the focus ring 67 (step S33). Thereafter, the process returns to the process of step S31. However, the focus operation on the focus ring 67 is continued by the user (the focus ring is continuously turned and pushed, or once the focus ring is rotated to a certain rotation angle, a predetermined focus is achieved. If the focus lens group L2 continues to be moved to the position, etc.), the processes of steps S31 and S33 are repeated. This series of processing is executed by, for example, loop processing that is processed at intervals of 1 ms.

  If it is determined in step S31 that the focus operation with the focus ring 67 has not been performed, the focus operation with the cross operation key 27 (focus operation function assignment) mounted on the camera body 3 is performed. It is determined whether or not (step S32). When it is detected that the focus operation with the cross operation key 27 is performed, the focus operation is performed by the focus operation with the cross operation key 27 (step S34). Thereafter, the process returns to the process of step S31. However, the focus operation with the cross operation key 27, not the focus ring 67, is continued by the user (the operation lever is kept pressed or once the operation lever is pressed, the predetermined operation is performed. If the focus lens group L2 continues to be moved to the focus position), the processes of steps S31, S32, and S34 are repeated. This series of processing is executed by, for example, loop processing that is processed at intervals of 1 ms.

  If it is determined in step S32 that the focus operation with the cross operation key 27 is not performed, that is, neither the cross operation key 27 nor the focus ring 67 is operated, the focus operation is stopped. (Step S35). As described above, when the cross operation key 27 or the focus ring 67 to which the focus operation function is assigned is pressed once, if the focus lens group L2 continues to be moved to a predetermined focus position, the process is completed. May execute an exception process for continuing the focus operation. Even when the processes of steps S31, S32, and S35 are repeated, this series of processes is executed in a loop process that is processed at intervals of 1 ms, for example.

  As described with reference to FIG. 10, when the user changes the focus position, the focus ring 67 mounted on the interchangeable lens unit 2 is operated to change the focus position, and the cross mounted on the camera body 3. Even when operating the operation key 27 (assigning the focus operation function) to change the focus position, the focus operation functions on the lens side and the main body side do not conflict with each other, and both the focus operation units are operated simultaneously. In addition, the focus operation function can be stably operated. In particular, here, the case where the focus ring 67 mounted on the interchangeable lens unit 2 is preferentially operated for focus operation has been described. Therefore, during the focus operation with the focus ring 67 of the interchangeable lens unit 2, even if the focus operation is performed with the cross operation key 27 (assignment of the focus operation function) of the camera body 3, the operation of the focus ring 67 has priority.

  As described above, when the interchangeable lens unit 2 equipped with the electric manual focus function and having the focus ring is connected to the camera body 3 having the focus operation key, the camera body 3 side focus operation unit and the lens side focus operation are performed. By making one of the units function as a focus operation member with priority given to the operation unit that was operated first, the convenience of focus operation is improved without competing with the focus ring and the focus operation key to break down the system. Can be made.

(2.9: Zoom operation and focus operation)
Next, the operation of the interchangeable lens unit 2 when the user performs the zoom operation and the focus operation will be described with reference to FIGS. FIG. 11 is a schematic perspective view of the camera system 1 equipped with the interchangeable lens unit 2 in which the focus ring 67 is mounted as a lens side operation unit in the first embodiment of the present invention.

  As shown in FIG. 11, when the zoom ring 64 is operated by the user, the rotation detection unit 65 detects whether the zoom ring 64 is zoomed to the telephoto side or zoomed to the wide angle side, and the lens microcomputer 40 When the zoom operation is performed on the telephoto side based on the detection result, the zoom lens group L1 is moved and controlled to the telephoto side via the zoom lens group drive control unit 61, and when the zoom operation is performed on the wide angle side, the zoom lens is operated. The zoom lens group L1 is controlled to move to the wide angle side via the group drive control unit 61.

  When the focus ring 67 is rotated by the user, the rotation detector 68 detects the amount and direction of rotation of the focus ring 67 and outputs a signal corresponding to the detection result. The lens microcomputer 40 transmits a drive signal for driving the focus lens group L2 to the focus lens group drive control unit 41 based on the focus ring rotation signal. When the rotation detection unit 68 detects that the rotation direction of the focus ring 67 has been rotated to infinity, the lens microcomputer 40 uses the focus lens group drive control unit 41 based on the detection result to detect the focus lens. The group L2 is controlled to move to the infinity side. When the rotation detection unit 68 detects that the rotation direction of the focus ring 67 has been rotated to the nearest side, the lens microcomputer 40 uses the focus lens group drive control unit 41 based on this detection result to detect the focus lens group. L2 is controlled to move to the closest side.

  The lens side operation unit for the electric manual focus operation may be a push type operation lever as shown in FIG. The operation of the focus operation lever 69 will be described with reference to FIGS. FIG. 12 is a schematic perspective view of the camera system 1 equipped with the interchangeable lens unit 2 in which the focus operation lever 69 is mounted as a lens side operation unit in the first embodiment of the present invention. FIG. 13 is a block diagram of the camera system 1 equipped with the interchangeable lens unit 2 in which the focus operation lever 69 is mounted as a lens side operation unit in the first embodiment of the present invention. In this case, the operation direction of the focus operation lever 69 is detected by the focus operation lever detector 70. The lens microcomputer 40 controls the movement of the focus lens group L2 via the focus lens group drive control unit 41 based on the detection result. As shown in FIG. 12, when the focus operation lever 69 is operated by the user, whether the focus operation lever 69 is operated to the infinity side (69F) or the close side (69N) in the focus operation lever detection unit 70 When the lens microcomputer 40 is operated to the infinity side based on the detection result, the focus lens group L2 is moved and controlled to the infinity side via the focus lens group drive control unit 41. When operated to the close side, the focus lens group L2 is controlled to move to the close side via the focus lens group drive control unit 41. 12 and 13 are the same as those in FIGS. 11 and 1, and the corresponding components are denoted by the same reference numerals and description thereof is omitted.

<3: Camera system features>
As described above, in the camera system 1, when the interchangeable lens having the electric manual focus function and having the focus operation unit is connected to the camera body having the focus operation unit, the main body side focus operation unit and Since either one of the lens side focus operation units functions as a focus operation member, the convenience of the focus operation can be improved without competing between the interchangeable lens and the focus operation unit of the camera body to break down the system. That is, the convenience of the camera system 1 can be improved.

  Also, when an interchangeable lens that is not equipped with an electric manual focus function is connected to a camera body that has a focus operation section, the focus operation function of the main body side operation section is canceled or an operation function that is different from the focus operation is assigned. As a result, it is possible to improve the convenience of focus operation without disrupting the system, regardless of whether an interchangeable lens with an electric manual focus function or an interchangeable lens without an electric manual focus function is attached to the camera body. be able to.

  Furthermore, when shooting with the viewfinder in the eye, the function of the focus control unit on the main unit is disabled, and when taking a picture while looking at the monitor image on the back of the camera without looking at the viewfinder, By enabling the function of the focus operation unit and displaying the fact on the monitor screen, a manual focus function suitable for the shooting mode is assigned, so that the convenience of the manual focus operation can be improved.

  Furthermore, when an interchangeable lens equipped with an electric manual focus function and having a focus operation unit is connected to a camera body having a focus operation unit, either the main body side focus operation unit or the lens side focus operation unit is connected. By making the previously operated operation unit function as a focus operation member with priority, the convenience of the zoom operation can be improved without causing the focus operation unit to compete and failing the system.

  Furthermore, when an operation other than focusing is assigned to the operation of the main body side operation unit, or when the operation of the main body side operation unit is disabled, the operation state of the main body side operation unit displayed on the LCD monitor or the like is displayed. By changing the display contents, the user can visually recognize the current state of the operation unit on the main body side, so that the convenience of operation of the camera system can be improved.

  In the first embodiment of the present invention, an example in which the focus ring 67 for electric manual focus is mounted on the interchangeable lens unit 2 has been described, but the focus operation unit for electric manual focus has a ring-shaped structure. Instead, it is also possible to configure the electric manual focus to function by providing an operation lever that can be operated in two directions, the infinity side and the close side.

  Further, in this embodiment, when an interchangeable lens having an electric manual focus function and having a focus operation unit is connected to a camera body having a focus operation unit, the main body side focus operation unit and the lens side focus operation unit In the above example, the process of selecting either one of the two is automatically performed. However, regardless of this, it may be configured to manually select either the main body side focus operation unit or the lens side focus operation unit. Good. Specifically, a changeover switch may be provided on either the interchangeable lens unit side or the camera body side, or both so as to be manually selected.

[Second Embodiment]
In the first embodiment of the present invention, the quick return mirror 23 is employed. However, the quick return mirror 23 can be omitted when focusing is possible by the contrast detection method. A camera system 1A according to the second embodiment of the present invention will be described with reference to FIG. FIG. 14 is a block diagram showing a configuration of a camera system 1A according to the second embodiment of the present invention. Components having substantially the same functions as those shown in FIG. 1 are given the same reference numerals, and descriptions thereof are omitted.

<1: Overall configuration of camera system>
In FIG. 14, a camera system 1A is an interchangeable lens type digital single-lens reflex camera system. The camera system 1A mainly includes a camera body 3A having the main functions of the camera system 1A, and an exchangeable detachably attached to the camera body 3A. And a lens unit 2. The interchangeable lens unit 2 is attached to a body mount 4 provided on the front surface of the camera body 3A via a lens mount 79 provided at the rearmost part.

  Compared with the camera body 3 shown in FIG. 1, the camera body 3 </ b> A shown in FIG. 14 omits the quick return mirror 23 that guides incident light from the imaging unit 71 to the finder optical system 22 and the focus detection unit 5. Instead, an electronic finder unit 95 such as a liquid crystal finder is provided. Similar to the display unit 20, the electronic viewfinder unit 95 can display the image signal recorded in the image recording unit 18 or the buffer memory 16 as a visible image based on a command from the image display control unit 21. . Thereby, even if the quick return mirror 23 is not mounted, the optical image of the subject formed by the imaging optical system L can be observed through the finder eyepiece window 9.

  In this case, the camera body 3A can be thinned in the optical axis AZ direction of the camera body 3A by omitting the finder optical system 22 and the quick return mirror 23. Furthermore, since the distance (lens back) from the lens at the rearmost part of the interchangeable lens unit 2 to the image sensor 11 can be shortened, the interchangeable lens unit 2 can be downsized.

  When the interchangeable lens unit 2 is compatible with moving image shooting, the camera body 3A in FIG. 14 always uses a contrast method based on image data generated by the image sensor 11 as the focus detection method. it can. Thereby, an accurate focus operation can be realized. Furthermore, since the opening / closing operation of the quick return mirror 23 is unnecessary, the focus operation can be speeded up and silenced, and it is possible to easily handle not only still image shooting but also movie shooting. It becomes.

  The interchangeable lens unit 2 is compatible with electric manual focus. The focus lens group drive controller 41 controls the movement of the focus lens group L2. The focus lens group L2 may be driven by a stepping motor, a DC motor, an electromagnetic linear motor, an ultrasonic motor, or the like. The focus lens group drive control unit 41 supplies power to these actuators and actuators for speed or position. It consists of a circuit that performs control. The interchangeable lens unit 2 has a focus ring 67 and a rotation detection unit 68. As described above, the focus ring 67 is a ring that adjusts the focus position to the infinity side or the close side by rotating the ring. By operating the focus ring 67, it is detected by the rotation detection unit 68 that it has been operated to the infinity side or the close side, and the operation information is transmitted to the lens microcomputer 40. When the lens microcomputer 40 detects that the operation information is operated on the infinity side, the lens microcomputer 40 moves and controls the focus lens group L2 to the infinity side via the focus lens group drive control unit 41. On the other hand, when the lens microcomputer 40 detects that the operation information is operated on the close side, the focus lens group L2 is moved and controlled to the close side via the focus lens group drive control unit 41.

<2: Features of the camera system>
As described above, similarly to the camera system 1, the camera system 1A can select the finder shooting mode and the monitor shooting mode according to the operation flow of FIG.

  When an interchangeable lens equipped with an electric manual focus function and having a focus operation unit is connected to a camera body having a focus operation unit, focus operation is performed on either the main body side focus operation unit or the lens side focus operation unit It can function as a member. Therefore, the convenience of the focus operation can be improved without the interchangeable lens unit 2 and the focus operation unit of the camera body 3A competing to break the system. That is, the convenience of the camera system 1A can be improved.

  Furthermore, as with the camera system 1, when an interchangeable lens that is not equipped with an electric manual focus function is connected to a camera body having a focus operation section, the focus operation function of the main body side operation section is canceled, or focus By assigning an operation function other than the operation, the system does not break down regardless of which of the interchangeable lens equipped with the electric manual focus function and the interchangeable lens not equipped with the electric manual focus function is attached to the camera body 3A. The convenience of the zoom operation can be improved.

  Furthermore, as with the camera system 1, when taking an image with the eyepiece in the viewfinder, the main body side focus operation function is disabled, and the image is taken while viewing the monitor image on the back of the camera body without making an eyepiece on the viewfinder. By enabling the focus operation function on the main unit side and displaying it on the monitor screen, a manual focus function suitable for the shooting mode is assigned, so the convenience of the manual focus operation can be improved. .

  Furthermore, as with the camera system 1, when an interchangeable lens having an electric manual focus function and having a focus operation unit is connected to a camera body having a focus operation unit, the main body side focus operation unit and the lens side focus are provided. By making one of the operation units function as a focus operation member with priority given to the operation unit that was previously operated, the convenience of manual focus operation is improved without the focus operation unit competing and system failure. Can be made.

  Furthermore, when an operation other than manual focus is assigned to the operation of the main unit side operation unit, or when the operation of the main unit side operation unit is disabled, the operation state of the main unit side operation unit displayed on the LCD monitor etc. By changing the displayed display contents, the user can visually recognize the current state of the operation unit on the main body side, so that the convenience of operation of the camera system can be improved.

  In this embodiment, an example has been described in which the focus operation unit for electric manual focus is mounted on the interchangeable lens unit. However, the focus operation unit for electric manual focus is mounted and the manual manual focus function is provided. However, it is also possible to make the manual manual focus function by operating the focus ring.

  Further, in this embodiment, when an interchangeable lens having an electric manual focus function and having a focus operation unit is connected to a camera body having a focus operation unit, the main body side focus operation unit and the lens side focus operation unit In the above example, the process of selecting either one of the two is automatically performed. However, regardless of this, it may be configured to manually select either the main body side focus operation unit or the lens side focus operation unit. Good. Specifically, a changeover switch may be provided on either the interchangeable lens unit side or the camera body side, or both so as to be manually selected.

[Other Embodiments]
(1)
In the present embodiment, various setting menus for moving image shooting may be set using the display unit based on the information on whether or not the moving image shooting of the interchangeable lens unit 2 is possible.

(2)
An image blur correction unit may be provided in one or both of the interchangeable lens unit 2 and the camera body 3. In this case, the camera system may be such that any one of the image blur correction units can be selected.

(3)
In this embodiment, the exposure time to the image sensor is controlled by operating the shutter. However, the present invention is not limited to this, and the exposure time of the image sensor may be controlled by an electronic shutter or the like.

(4)
In the present embodiment, the lens information includes information indicating whether or not movie shooting is supported. However, whether or not it supports moving image shooting may be determined based on whether or not the focus lens group drive method or the focus lens group drive control unit 41 is compatible with a contrast detection method. Regarding the driving method of the focus lens group, it may be determined whether or not the focus lens group is directly driven by using a stepping motor or a linear actuator (electromagnetic method or piezoelectric method).

(5)
In the present embodiment, the interchangeable lens unit 2 is compatible with moving image shooting. However, as described above, the interchangeable lens unit may not support moving image shooting.

  The present invention can be widely applied to camera systems in which an interchangeable lens compatible with electric manual focus can be attached.

1 is a block diagram showing the configuration of a camera system according to a first embodiment of the present invention (when an interchangeable lens unit is equipped with a focus ring). 1 is a block diagram showing a configuration of a camera body in a first embodiment of the present invention. 2A and 2B are schematic views of the camera body according to the first embodiment of the present invention, where FIG. 1A is a view of the camera body viewed from above, and FIG. 2B is a view of the camera body viewed from the back. The figure explaining the finder imaging | photography mode in 1st Embodiment of this invention. The figure explaining the monitor imaging | photography mode in 1st Embodiment of this invention. The flowchart which shows the procedure of the focus function selection in 1st Embodiment of this invention. It is a figure which shows the example of a display of the display part of the camera main body in 1st Embodiment of this invention, (a) The figure which shows the example of a display when an interchangeable lens unit respond | corresponds to an electric manual focus, (b) The interchangeable lens unit is The figure which shows the example of a display when not corresponding to an electric manual focus The flowchart which shows a specific operation | movement flow about the process of selecting which of the focus ring mounted in the interchangeable lens unit of the camera system in 1st Embodiment of this invention, and the cross operation key mounted in the camera main body. Processing flowchart of camera body regarding selection of focus operation unit of electric manual focus function according to the first embodiment of the present invention (priority operation key priority) Processing flow chart of camera body regarding focus operation unit selection of electric manual focus function in first embodiment of the present invention (focus ring priority) 1 is a schematic perspective view of a camera system mounted with an interchangeable lens unit in which a focus ring is mounted as a lens side operation unit in the first embodiment of the present invention. 1 is a schematic perspective view of a camera system equipped with an interchangeable lens unit in which a focus operation lever is mounted as a lens side operation unit in the first embodiment of the present invention. 1 is a block diagram of a camera system equipped with an interchangeable lens unit in which a focus operation lever is mounted as a lens side operation unit in the first embodiment of the present invention. The block diagram which shows the structure of the camera system in 2nd Embodiment of this invention.

Explanation of symbols

1 Camera system 2 Interchangeable lens unit (lens barrel)
3 Camera body 3a Case 4 Body mount 9 Viewfinder eyepiece window 10 Body microcomputer (control unit)
11 Imaging sensor (imaging unit)
DESCRIPTION OF SYMBOLS 12 Image sensor drive control part 20 Display part 21 Image display control part 23 Quick return mirror 25 Power switch 26 Mode switching dial 27 Cross operation key (main body side operation part)
28 MENU setting button 29 SET button 30 Release button 31 Shutter control unit 33 Shutter unit 34 Viewfinder switch button 35 Movie shooting operation button 40 Lens microcomputer 41 Focus lens group drive control unit 61 Zoom lens group drive control unit 64 Zoom ring 65, 68 Rotation Detection unit 67 Focus ring (Lens side focus operation unit)
69 Focus operation lever 70 Focus operation lever detector 79 Lens mount L Imaging optical system L1 First lens group (zoom lens group)
L2 Second lens group (focus lens group)

Claims (11)

A mount in which a lens barrel is detachable, an imaging unit for acquiring an image of a subject,
When a lens barrel capable of electric manual focus is attached, a camera body including a main body side operation unit for operating the manual focus,
Lens information including information on whether or not the mounted lens barrel has an electric manual focus and information on whether or not it has a lens-side focus operation unit for operating a manual focus operation is displayed on the lens mirror. A camera main body comprising a control unit that controls a function acquired from a cylinder and assigned to the main body side operation unit according to the lens information. The control unit operates an operation different from the manual focus operation when a lens barrel having a lens side focus operation unit capable of performing manual focus operation with electric power and operating a manual focus operation is mounted. The camera body according to claim 1, wherein a function is assigned to the body side operation unit. The control unit assigns a function for operating an operation different from the manual focus operation to the main body side operation unit when a lens barrel that is not capable of electric manual focus is attached. 1. The camera body according to 1. 2. The camera body according to claim 1, wherein the control unit invalidates the operation of the body side operation unit when a lens barrel that is not capable of electric manual focus is mounted. A finder and a monitor
A viewfinder shooting mode for taking a picture with the eyepiece on the viewfinder;
A monitor shooting mode for shooting without eyepiece on the viewfinder,
The controller is
When shooting in the viewfinder shooting mode, the lens side focus operation unit functions as a manual focus operation unit,
2. The camera body according to claim 1, wherein when photographing in the monitor photographing mode, the body-side operation unit is caused to function as an operation unit for a manual focus operation. The controller is capable of electric manual focus, and when a lens barrel having a lens-side focus operation unit for operating a manual focus operation is attached, during operation of the main body side operation unit The camera body according to claim 1, wherein the operation of the lens side focus operation unit is invalidated. The control unit is electrically operated and can be manually operated. When a lens barrel having a lens side focus operation unit for operating a manual focus operation is mounted, the lens side focus operation unit is being operated. 2. The camera body according to claim 1, wherein operation of the body side operation unit is invalidated. The display unit displays information related to the operation of the main body side operation unit, and the control unit changes contents displayed on the display unit according to a function assigned to the operation of the main body side operation unit. The camera body according to any one of claims 1 to 7. The camera body according to claim 8, wherein the control unit invalidates a display corresponding to a function in which the operation of the main body side operation unit is invalidated. It is attached to the camera body according to any one of claims 1 to 9, and has information on whether or not electric manual focus is possible and whether or not it has a lens-side focus operation unit for operating a manual focus operation. A lens barrel comprising a storage unit for storing lens information including the above information. A camera system comprising: the camera body according to claim 1; and the lens barrel according to claim 10.

Images