JP2004221785A - Camera control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate handling of cameras when a plurality of the cameras are used at the same time to photograph an object. <P>SOLUTION: When a plurality of the cameras are used to photograph the object, one of the cameras is set as a photographing available camera, a video display device displays the list of video images from a plurality of the cameras and displays the video image from the camera set in a photographing enabled way greater than the video images from the other cameras on the video display device, so that the images picked up by a plurality of the cameras can be displayed on one display device and the video image from the camera set to be the photographing available camera can be displayed in a larger size. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a camera control device, and is particularly suitable for use in a technique in which a plurality of cameras having an electronic viewfinder or an image monitor for displaying an image being captured are connected by wire or wireless to perform shooting control of each other. It is something.
[0002]
[Prior art]
2. Description of the Related Art In recent years, an image pickup device having a photoelectric conversion function such as a CCD or a CMOS is provided in a camera for photographing a still image, and an electronic still which converts optical image information into image information by an electric signal and records the image information on a recording medium. The development of cameras is remarkable.
[0003]
In such an electronic still camera, not only a conventional optical viewfinder as a viewfinder for observing a subject image, but also an image display device represented by a liquid crystal panel based on electrical image information obtained by the image sensor. There are many types of display.
[0004]
Such a viewfinder is called a so-called electronic viewfinder. Further, in an electronic still camera, a function has been put to practical use in which some communication function is provided and a captured image can be transferred to another camera or a computer.
[0005]
As an example, Patent Literature 1 discloses that electronic still cameras are connected to each other so that mutual image transfer is possible, and photographing control of one electronic still camera serving as a master side and the other electronic still camera serving as a slave side is performed. A technique for enabling the function is disclosed.
[0006]
[Patent Document 1]
JP-A-9-284696
[0007]
[Problems to be solved by the invention]
There are various situations in which a photograph is taken, and in some cases, a plurality of cameras may be set for the same subject and simultaneously operated to operate the plurality of cameras.
[0008]
Under such a situation, the focal lengths of the photographing lenses attached to a plurality of cameras are made different, and a camera having an optimum angle of view is continuously selected while appropriately selecting a camera having an optimum angle of view according to the position of a moving subject. I often shoot at
[0009]
However, in the related art, in a plurality of cameras, each finder shows its own captured image, but none of the cameras includes images captured by other cameras. In the above-mentioned Patent Document 1, the images of the master camera and the slave camera cannot be simultaneously checked.
[0010]
Therefore, it is difficult for the photographer to instantly determine which of the multiple cameras has the optimum angle of view, and when the moving speed of the subject is fast, the photographer misses a photo opportunity and takes a failed photograph. In many cases, I couldn't take any photos with the camera I was preparing for.
[0011]
In addition, especially in outdoor shooting, the exposure conditions and the like may suddenly change, and it has been difficult to change the exposure settings of a plurality of cameras during shooting in a clean and efficient manner.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to facilitate handling when photographing a subject using a plurality of cameras simultaneously.
[0012]
[Means for Solving the Problems]
A camera control device of the present invention is a camera control device for controlling the operation of each camera when shooting an object using a plurality of cameras at the same time, and one camera among the plurality of cameras. A photographable camera setting means for setting a camera as a photographable camera, an image display means capable of displaying images from the plurality of cameras in a list, and a photographable camera set by the photographable camera setting means. Display control means for displaying the image on the image display means so that the image is larger than the image from another camera.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a camera control device according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a sectional view showing an optical layout in an electronic still camera to which the present embodiment is applied.
[0014]
FIG. 1 shows the configuration of a so-called single-lens reflex type electronic still camera with interchangeable lenses. Reference numeral 10 denotes an electronic still camera main body, reference numeral 30 denotes an interchangeable lens, and reference numeral 11 denotes a photographing optical axis.
[0015]
In the electronic still camera main body 10, reference numeral 12 denotes an image pickup device including a storage type photoelectric conversion element in an area such as CMOS or CCD, reference numeral 13 denotes a semi-transparent main mirror, and reference numeral 14 denotes a low-pass for blurring a predetermined high frequency component of an optical image. A filter, 15 is a paraxial imaging surface conjugate to the image pickup device surface 12 by the first main mirror 13, 16 is a reflection mirror, 17 is an infrared cut filter, 18 is a diaphragm having two openings, and 19 is 2 The next imaging lens 20 is a focus detection sensor.
[0016]
The focus detection sensor 20 is composed of an area or line accumulation type photoelectric conversion element such as a CMOS or a CCD, and outputs two pairs of image signals obtained through different pupil positions of a photographing lens to thereby realize a well-known image shift method. Focus detection is possible. In the focus detection sensor 20, a signal storage unit, a signal processing peripheral circuit, and the like are formed as an integrated circuit on the same chip in addition to the light receiving sensor unit.
[0017]
21 is an image display means such as a liquid crystal panel unit or an organic EL element in which a large number of display segments are arranged in a matrix, 22 is an enlargement lens for enlarging a display image by the image display means 21, 23 is an eyepiece, and 24 is an eyepiece, for example. An image sensor for line-of-sight detection comprising an accumulation type photoelectric conversion element in an area such as a CMOS or a CCD, 25 is an imaging lens for the image sensor 24 for line-of-sight detection, and 26 is a component that transmits visible light components and reflects infrared light components. A prism having a mirror surface, and 27 is an infrared light emitting diode.
[0018]
An electronic viewfinder is formed by the configuration of the image display means 21, the magnifying lens 22, the prism 26 and the eyepiece 23. When detecting the direction of the line of sight of the photographer, the infrared light emitting diode 27 is turned on, and the eyeball image of the photographer illuminated by the infrared light is detected through the eyepiece lens 23, the prism 26, and the imaging lens 25. Image on the imaging element 24 for use.
[0019]
Techniques for detecting the direction of the photographer's line of sight from the eyeball image of the photographer formed on the image sensor 24 for line of sight detection have already been put to practical use and are well known, and therefore detailed description is omitted. Reference numeral 28 denotes a contact portion for performing information communication with the photographing lens, and reference numeral 29 denotes a mount portion for mounting the photographing lens.
[0020]
In the interchangeable lens 30, reference numeral 31 denotes an aperture, reference numeral 32 denotes a contact portion for performing information communication with the camera body, reference numeral 33 denotes a mount portion to be attached to the camera, and reference numerals 34 to 38 denote optical lenses constituting a photographing lens.
[0021]
FIG. 2 is a view of the electronic still camera body 10 of the present embodiment as viewed from the back. Hereinafter, the operation members and the like will be described with reference to FIG.
In FIG. 2, reference numeral 23 denotes an eyepiece of the electronic viewfinder described with reference to FIG. 1, and reference numeral 40 denotes an antenna for communicating with another electronic still camera. Reference numeral 61 denotes a release switch for performing imaging, 62 denotes an electronic dial for changing a set value of an exposure relationship such as a shutter speed and an aperture value, and 63 denotes an exposure correction value setting switch.
[0022]
Reference numeral 64 denotes a pointing means using, for example, a trackball, etc., 65 denotes a pointer selection switch for selecting whether to perform pointer input, which will be described later, by eye-gaze input or 64 pointing means, and 66, an electronic still camera which will be described later, alone. An operation mode selection switch 67 for selecting whether to use the camera mode or the multiple camera mode, and an exposure mode selection switch 67 for selecting a program AE mode, a shutter priority AE mode, an aperture priority AE mode, and the like.
[0023]
FIG. 3 is a block diagram illustrating a configuration example of an electric circuit of the camera body 10 and the interchangeable lens 30 according to the present embodiment.
In FIG. 3, the image sensor 12, the focus detection sensor 20, the image display unit 21, the visual line detection image sensor 24, the infrared light emitting diode 27, the antenna 40, and various operation members 61 to 67 are described in FIG. 1 or FIG. It is the same as what was done.
[0024]
In the camera body 10, reference numeral 41 denotes a control means of a one-chip microcomputer having an ALU, a ROM, a RAM, an A / D converter, a timer, a serial communication port (SPI) and the like built therein, and controls the entire camera mechanism and the like. Do. A specific control sequence of the control means 41 will be described later. The output signal of the focus detection sensor 20 is connected to the A / D converter input terminal of the control means 41.
[0025]
Reference numeral 42 denotes a transmission / reception circuit, which is connected to an output terminal of the control means 41 and controls transmission / reception. Reference numeral 43 denotes a modulation / demodulation circuit, which performs necessary modulation processing on transmission information to the transmission / reception circuit 42 and outputs it, or demodulates information received by the transmission / reception circuit 42.
[0026]
Reference numeral 44 denotes a signal processing circuit which controls the image pickup device 12 according to an instruction of the control unit 41, inputs an image signal output from the image pickup device 12 while performing A / D conversion, performs signal processing, and displays the signal on the image display unit 21. This is for obtaining image information to be output, image information output to the modulation / demodulation circuit 43 for transmission, or a captured image for recording. Further, necessary image processing is performed on the obtained image signal.
[0027]
Reference numeral 45 denotes a RAM for storing image information that is temporarily used for work or displayed on the image display means 21 when the signal processing circuit 44 performs signal processing, and 46 is a non-volatile memory such as a flash ROM or the like. The storage means is an optical disk or the like and stores a captured image signal.
[0028]
Reference numeral 47 denotes a flash unit that emits light when shooting when the brightness of the subject is insufficient, and emits light in accordance with an output signal of the control unit 41. Reference numeral 48 denotes a display which includes a liquid crystal panel or the like and displays the number of shots, date information, exposure information, and the like. Each segment is controlled to be turned on in response to an output signal of the control means 41. Reference numeral 28 denotes a contact portion shown in FIG. 1 to which input / output signals of a serial communication port of the control means 41 are connected.
[0029]
In the interchangeable lens 30, reference numeral 51 denotes lens control means, which is constituted by, for example, a one-chip microcomputer including an ALU, a ROM, a RAM, a timer, a serial communication port (SPI), and the like.
[0030]
Reference numeral 52 denotes a first motor driver which is connected to and controlled by an output terminal of the lens control means 51 and drives a first motor 53 for performing focus adjustment. Reference numeral 54 denotes a second motor driver, which is connected to and controlled by an output terminal of the lens control means 51, and drives a second motor 55 for controlling the diaphragm 31 shown in FIG.
[0031]
Reference numeral 56 denotes a distance encoder for obtaining information relating to the amount of extension of the focusing lens, that is, the subject distance. The distance encoder 56 is connected to an input terminal of the lens control unit 51. Reference numeral 57 denotes a zoom encoder for obtaining focal length information at the time of photographing when the interchangeable lens 30 is a zoom lens, and is connected to an input terminal of the lens control means 51. Reference numeral 32 denotes a contact portion shown in FIG. 1, to which input / output signals of a serial communication port of the lens control unit 51 are connected.
[0032]
When the interchangeable lens 30 is mounted on the camera body 10, the respective contact portions 28 and 32 are connected, and the lens control means 51 can perform data communication with the control means 41 of the camera body.
[0033]
The lens-specific optical information necessary for the control unit 41 of the camera body to perform focus detection and exposure calculation, information on the subject distance based on the distance encoder 56 or the zoom encoder 57, or the focal length information is stored in the lens control unit 51. Is output to the control means 41 of the camera body by data communication.
[0034]
The focus adjustment information and the aperture information obtained as a result of the focus detection and the exposure calculation performed by the control unit 41 of the camera body are output from the control unit 41 of the camera body to the lens control unit 51 by data communication, and the lens control is performed. The means 51 controls the first motor driver 52 according to the focus adjustment information, and controls the second motor driver 54 according to the aperture information.
[0035]
Next, a specific operation sequence of the control unit 41 of the camera body according to the present embodiment will be described with reference to the flowchart starting from FIG. When the power switch (not shown) is turned on and the control means 41 becomes operable, the processing is executed from the step (101) in FIG.
[0036]
When the process is started, in the first step (101), information on the operation mode selection switch 66 is input to detect whether or not to use the electronic still camera in the single camera mode. If the result of this detection is that the camera is to be used in the single camera mode, the operation proceeds to step (102).
[0037]
In step (102), information on the exposure mode selection switch 67 is input. If the selected exposure mode is the shutter priority AE mode, a setting value such as 1/125 is initialized, and if the selected exposure mode is the aperture priority AE mode, a setting value such as F5.6 is initialized.
[0038]
Next, in step (103), information on the pointer selection switch 65 is input.
Next, in step (104), a control signal is output to the signal processing circuit 44, a predetermined accumulation time and a readout gain are set, and the image sensor 12 is driven to start imaging for the electronic viewfinder.
[0039]
Next, in step (105), luminance information in the screen is input from the imaging information to determine whether or not the captured image has an appropriate brightness. If the brightness is not appropriate, the storage time of the image sensor 12 is changed. Alternatively, the readout gain is changed to make the brightness of the captured image appropriate. In addition, according to the information on the accumulation time when the captured image has the appropriate brightness, the information on the readout gain, the exposure mode information input in the processing of the step (102), the set value in the exposure mode, and the set exposure correction value. The exposure time and aperture value for imaging are calculated and displayed on the display 48.
[0040]
Next, in step (106), a control signal is output to the signal processing circuit 44 so that the captured image is displayed on the image display means 21. FIG. 14 shows a specific display example as an electronic viewfinder displayed on the image display means 21, where 71 is an image being captured, 72 is 1/500 as the shutter speed from the left side, and 8 as the aperture value. 0.0, -0.5 as an exposure correction value, and a focus state display. Thereafter, the image display means 21 displays a moving image by repeating such imaging and image display processing about 30 times per second.
[0041]
Next, in step (107), a control signal is output to the focus detection sensor 20 to perform signal accumulation, and then A / D conversion is performed while reading out the signal accumulated in the focus detection sensor 20. . Further, various necessary data correction such as shading is performed on the read digital data. Lens information and the like necessary for performing focus detection are input from the lens control unit 51, and the focus state of each part of the photographing screen is calculated from this and digital data obtained from the focus detection sensor 20.
[0042]
Next, in step (108), a lens movement amount for focusing is calculated according to the calculated focus state, and the calculated lens movement amount is output to the lens control means 51. In accordance with this, the lens control unit 51 outputs a signal to the first motor driver 52 so as to drive the focus adjusting lens, and drives the first motor 53. As a result, the photographic lens is brought into focus with respect to the subject.
[0043]
Next, in a step (109), it is checked whether or not the release switch 61 is turned on. If it is not turned on, the process proceeds to step (110).
Next, in step (110), it is checked whether the electronic dial 62 is operated. As a result of this check, if the operation is not performed, the process returns to the step (101), but if the operation is performed, the process proceeds to the step (111).
[0044]
Next, in step (111), it is checked whether the exposure compensation value setting switch 63 is turned on. If the result of this check is that the exposure correction value setting switch 63 is on, the flow proceeds to step (112).
[0045]
Next, in step (112), the exposure correction value is changed according to the operation amount of the electronic dial detected in the processing in step (110). The initial value of the exposure correction value is “0”. Thereafter, the process returns to step (101). If the exposure correction value is changed, the exposure time and aperture value for actual imaging are calculated again in step (105), and the change in the exposure correction value becomes the exposure time and aperture value. Will be reflected. If the exposure correction value setting switch 63 has not been turned on in the process of step (111), the process proceeds to step (113).
[0046]
In step (113), if the exposure mode selected in accordance with the operation amount of the electronic dial detected in the processing in step (110) is the shutter priority AE mode, the set value of the exposure time is set to the selected exposure mode. If is the aperture priority AE mode, the set value of the aperture value is changed.
[0047]
Thereafter, the process returns to step (101). If the set value is changed, the exposure time and aperture value for main imaging are calculated again by the processing of step (105), and the change in the set value is changed to the exposure time and aperture value. Will be reflected. If the release switch 61 has been turned on in step (109), the process proceeds to step (114).
[0048]
Next, in step (114), the aperture value information calculated in the process of step (105) is output to the lens control unit 51. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is brought into the aperture stop state.
[0049]
Next, in step (115), the signal processing circuit 44 sets the accumulation time of the image sensor 12 according to the exposure time calculated in the process of step (105), and causes the image sensor 12 to perform main imaging. Output instructions to At this time, in the case of a low luminance scene or the like, the flash unit 47 emits light as necessary.
[0050]
Next, in step (116), a signal is output to the lens control means 51 so that the aperture 31 is in a light-shielding state. In accordance with this signal, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the photographing lens enters a light-shielding state.
[0051]
Next, in step (117), the image data obtained by the main imaging is read from the image sensor 12 while performing A / D conversion, and an instruction is output to the signal processing circuit 44 to perform necessary correction processing and signal processing. I do.
[0052]
Next, in step (118), information is output to the lens control means 51 so as to open the aperture 31. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is in the aperture open state.
[0053]
Next, in step (119), the signal processing circuit 44 is instructed to convert the captured image information read in the processing in step (117) into a recording file format and store it in the storage means 46. Output. Thus, a series of photographing sequences in the single camera mode is completed, and the process returns to step (101).
[0054]
Next, the processing procedure in the multiple camera mode will be described with reference to a flowchart. First, the outline of the multiple camera mode in the present embodiment will be described.
[0055]
The operation mode selection switch 66 further selects a master camera mode and a slave camera mode. Of the plurality of electronic still cameras, one is used in a master camera mode, and the other electronic still cameras are used in a slave camera mode.
[0056]
The photographer operates only the camera set in the master camera mode to perform a shooting operation, and the other electronic still cameras set in the slave camera mode operate in accordance with a command transmitted from the camera set in the master camera mode by communication.
[0057]
Of the multiple electronic still cameras, which camera to shoot can be selected by operating the camera set to the master camera mode, and the camera set to the master camera mode is the camera that can shoot by default. The other electronic still cameras set to the slave camera mode are non-capturable cameras.
[0058]
As described above, among the plurality of electronic still cameras, simultaneous shooting is performed by all of the plurality of electronic still cameras according to the mode of shooting by the selected one electronic still camera and the setting of the camera set to the master camera mode. Mode.
[0059]
Return to the description of the flowchart. If the camera is not in the single camera mode, that is, in the case of the multiple camera mode in which a plurality of electronic still cameras are connected and the photographing control of each camera is performed, the process proceeds from the step (101) to the step (121).
[0060]
In step (121), information on the operation mode selection switch 66 is input to check whether or not the master camera mode of the multiple camera mode has been set. If so, go to step (122).
[0061]
In step (122), it is further checked from the information on the operation mode selection switch 66 whether or not the mode is such that all of the plurality of electronic still cameras are in the simultaneous shooting mode. If not, that is, if the mode is one in which shooting is performed by one selected camera, the process proceeds to step (123).
[0062]
In step (123), the camera set in the master camera mode is initialized as a photographable camera. After the initialization, the process proceeds to step (201) in FIG.
[0063]
In step (201), it is checked whether the camera is set as a photographable camera. Since the camera has just been initially set as a photographable camera in the process of step (123), the process proceeds to step (202).
[0064]
In step (202), the transmission / reception circuit 42 is controlled to communicate with another camera set in the slave camera mode via the antenna 40. The operation of the camera set in the slave camera mode will be described later.
[0065]
In step (203), if communication with another camera set in the slave camera mode has been correctly established, the process proceeds to step (204). If communication is not established properly because there is no response from another camera or there is another camera set in the master camera mode, the multiple camera mode cannot be operated normally. I do.
[0066]
In step (204), information on the exposure mode selection switch 67 is input. If the selected exposure mode is the shutter priority AE mode, a setting value such as 1/125 is initialized, and if the selected exposure mode is the aperture priority AE mode, a setting value such as F5.6 is initialized.
[0067]
In step (205), the information of the pointer selection switch 65 is input, and it is checked whether the setting of the pointer input is set to be performed by the line-of-sight input or the pointing means 64 is set.
[0068]
Further, when the setting of the pointer input is set to be performed by the line of sight input, the infrared light emitting diode 27 is turned on to input the eyeball image of the photographer formed on the image sensor 24 for line of sight detection. To start detecting the gaze direction of the photographer. When the setting of the pointer input is set to be performed by the pointing means 64, the information input of the pointing means 64 is started.
[0069]
In step (206), a control signal is output to the signal processing circuit 44, a predetermined accumulation time and a readout gain are set, and the image pickup device 12 is driven to start image pickup for the electronic viewfinder.
[0070]
In step (207), luminance information in the screen is input from the imaging information to determine whether or not the captured image has appropriate brightness. If the brightness is not appropriate, the storage time of the image sensor 12 is changed or The brightness of the captured image is adjusted by changing the readout gain.
[0071]
Further, according to the information on the accumulation time when the captured image has become appropriate brightness, the information on the readout gain, the exposure mode information inputted in the processing of the step (204), the set value in the exposure mode and the set exposure correction value. The exposure time and aperture value for imaging are calculated and displayed on the display 48.
[0072]
In step (208), the transmission / reception circuit 42 is controlled to start receiving, via the antenna 40, the captured image information for the electronic viewfinder from another camera set in the slave camera mode, and inputs the information to the signal processing circuit 44. To do.
[0073]
Next, in step (209), the image picked up by the own camera started in the processing in step (206) and received from another camera set in the slave camera mode started in the processing in step (208). A control signal is output to the signal processing circuit 44 so that the captured image is synthesized and displayed on the image display means 21.
[0074]
Now, assume that three cameras are wirelessly connected and used as shown in FIG. In FIG. 15, 10-1 is a first camera, 10-2 is a second camera, and 10-3 is a third camera. Then, it is assumed that the first camera 10-1 is set to the master camera mode, and the second camera 10-2 and the third camera 10-3 are set to the slave camera mode.
[0075]
Further, 30-1 is a first lens mounted on the first camera 10-1, 30-2 is a second lens mounted on the second camera 10-2, and 30-3 is a third lens. It is a third lens attached to the camera 10-3. The first lens 30-1 is a super-telephoto lens such as 300 mm, the second lens 30-2 is a telephoto lens such as 200 mm, and the third lens 30-3 is a medium telephoto lens such as 100 mm. .
[0076]
40-1 is an antenna of the first camera 10-1, 40-2 is an antenna of the second camera 10-2, and 40-3 is an antenna of the third camera 10-3. FIG. 16A shows a specific display example as an electronic viewfinder displayed on the image display means 21 under such a situation.
[0077]
In FIG. 16A, reference numeral 71-1 denotes a master camera mode in which the first camera 10-1, which is set as a currently available camera, is capturing an image and is displayed in a larger area than other images. You.
[0078]
Reference numeral 71-2 denotes an image being captured by the second camera 10-2 which is in the slave camera mode and is currently set as a non-capturable camera. Reference numeral 71-3 denotes an image being captured by the third camera 10-3 which is in the slave camera mode and is currently set as a non-capturable camera, and performs signal processing on image information received via the antenna 40-1. The circuit 44 synthesizes the image so that it can be displayed on the screen of the image display means 21 and displays the image in an area smaller than the image 71-1.
[0079]
Reference numeral 72 denotes a photographing information display of the first camera 10-1 indicating, from the left side, 1/500 as the shutter speed, 8.0 as the aperture value, -0.5 as the exposure correction value, and indicating the in-focus state. .
[0080]
Reference numeral 73 denotes a pointer display, which performs a display indicating an arbitrary position in the image displayed by the image display means 21 in accordance with the line-of-sight input information or the information of the pointing means 64 started in the step (205). As described above, in the present embodiment, the images from the plurality of cameras are displayed in a list on the image display unit 21 of the master camera, and the images from the shootable cameras are larger than the images from the other cameras. , It is possible to immediately know which camera can shoot. When displaying images from a plurality of cameras in a list, the images may be displayed so as to partially overlap the images.
[0081]
Returning to FIG. 5, in step (210), after outputting a control signal to the focus detection sensor 20 to perform signal accumulation, the A / D conversion is performed while reading out the signal accumulated in the focus detection sensor 20. I do.
[0082]
Further, various necessary data correction such as shading is performed on the read digital data. Lens information and the like necessary for performing focus detection are input from the lens control unit 51, and the focus state of each part of the photographing screen is calculated from this and digital data obtained from the focus detection sensor 20.
[0083]
Next, in step (211), a lens movement amount for focusing is calculated according to the calculated focus state, and the calculated lens movement amount is output to the lens control means 51. In accordance with this, the lens control unit 51 outputs a signal to the first motor driver 52 so as to drive the focus adjusting lens, and drives the first motor 53. As a result, the photographic lens is brought into focus with respect to the subject. Next, the process proceeds to step (221) in FIG.
[0084]
In step (221), the user inputs the line-of-sight input information started in step (205) or the information on the pointer position based on the information of the pointing means 64.
[0085]
In step (222), it is determined whether or not to change the photographable camera based on the input information on the pointer position. Specifically, as shown in FIG. 16A, when the pointer display 73 is within the area of the captured image 71-1 of the camera set as the photographable camera, the photographable camera is changed. Absent.
[0086]
When the pointer display 73 is located in the area of the captured image 71-2 or 71-3 of the camera set as the non-capturable camera, the camera capable of capturing is changed. If the change of the photographable camera is not performed, the process proceeds to step (223).
[0087]
In step (223), it is checked whether or not the release switch 61 is turned on. If it is not turned on, the process proceeds to step (224).
Next, in step (224), it is checked whether the electronic dial 62 is operated. As a result of this check, if the operation is not performed, the process returns to the step (201), but if the operation is performed, the process proceeds to the step (225).
[0088]
In step (225), it is checked whether the exposure correction value setting switch 63 is turned on. If the result of this check is that the switch is on, the operation proceeds to step (226).
In step (226), the exposure correction value is changed according to the operation amount of the electronic dial detected in the processing in step (224).
[0089]
In the present embodiment, the initial value of the exposure correction value is “0”. Thereafter, the process returns to step (201). If the exposure correction value is changed, the exposure time and aperture value for main imaging are calculated again in step (207), and the change in the exposure correction value is calculated as the exposure time and aperture. Reflected in the value. If the exposure correction value setting switch 63 has not been turned on in the process of step (225), the process proceeds to step (227).
[0090]
In step (227), if the exposure mode selected according to the operation amount of the electronic dial detected in the processing in step (224) is the shutter priority AE mode, the set value of the exposure time is set. If the mode is the aperture priority AE mode, the set value of the aperture value is changed.
[0091]
Thereafter, the process returns to step (201), so that when the set value is changed, the exposure time and aperture value for the main imaging in step (207) are calculated again, and the change in the set value is reflected on the exposure time and aperture value. You.
[0092]
If the release switch 61 has been turned on in step (223), the process proceeds to step (228).
In step (228), the aperture value information calculated in the process of step (207) is output to the lens control unit 51. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is brought into the aperture stop state.
[0093]
In step (229), the signal processing circuit 44 is instructed to set the accumulation time of the image sensor 12 according to the exposure time calculated in the process of step (207) and to perform the main image pickup by the image sensor 12. Is output. At this time, in the case of a low luminance scene or the like, the flash unit 47 emits light as necessary.
[0094]
In step (230), a signal is output to the lens control means 51 so that the diaphragm 31 is set in the light shielding state. In accordance with this signal, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the photographing lens enters a light-shielding state.
[0095]
In step (231), the image data obtained by the main imaging is read from the image sensor 12 while performing A / D conversion, and an instruction is output to the signal processing circuit 44 to perform necessary correction processing and signal processing.
[0096]
In step (232), information is output to the lens control means 51 so as to open the aperture 31. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is in the aperture open state.
[0097]
In step (233), an instruction is output to the signal processing circuit 44 to convert the captured image information read in the processing in step (231) into a recording file format and store it in the storage means 46.
[0098]
As described above, when the release switch 61 is operated in a state where the camera set to the master camera mode in the multiple camera mode is a photographable camera, photographing is performed by the own camera.
[0099]
Next, the change of the photographable camera will be described.
If the pointer display 73 is in the area of the captured image 71-2 or 71-3 of the camera set as the non-capturable camera in the step (222), the change of the photographable camera is performed (step 222). Go to 241). For example, it is assumed that the pointer display 73 is within the area of the captured image 71-2 of the camera set as the non-capturable camera.
[0100]
In step (241), the own camera, which is the first camera 10-1, which has been set as a camera capable of shooting in the master camera mode, is changed to a non-shootable camera in master camera mode.
[0101]
Next, in step (242), the transmission / reception circuit 42 changes the setting of the second camera 10-2, which has been operating in the slave camera mode and has been set as a non-capturable camera, to a photographic camera. And outputs a control signal to perform communication. The setting of the third camera 10-3 operating in the slave camera mode and set as the non-capturable camera is not particularly changed here.
[0102]
In step (243), as illustrated in FIG. 16A, the first camera 10-1 that has been set as a camera that can be photographed so far places the image 71-1 being captured in an area larger than other images. From the composite display that has been displayed by the second camera 10-2, which is newly set as a photographable camera, to the composite display in which the image 71-2 being captured is displayed in a larger area than other images. A control signal is output to the signal processing circuit 44 so as to switch.
[0103]
As a result, a display as shown in FIG.
In FIG. 16, an image 71-1 ′ is an image being captured by the first camera 10-1 in which a small area is displayed because the camera is changed to a non-capturable camera, and an image 71-2 ′ is captured. The second camera 10-2, which is displayed as a large area due to being changed to a possible camera, is an image being captured. Reference numeral 72 'denotes a display of photographing information of the second camera 10-2 changed to a photographable camera. Next, the process proceeds to step (251) in FIG.
[0104]
In the step (251), it is checked whether or not the release switch 61 is turned on. If it is turned on, the process proceeds to step (252).
In step (252), a control signal is output to the transmission / reception circuit 42 so as to communicate a release instruction signal for performing shooting with respect to the camera capable of shooting in the slave camera mode. At this time, since the camera 10-2 is set as a camera capable of taking a picture, the camera 10-2 takes a picture in response to this instruction signal. When this step ends, the process returns to the step (201).
[0105]
If the release switch 61 has not been turned on in the process of step (251), the process proceeds to step (253).
In step (253), it is checked whether the electronic dial 62 is operated. If the operation has not been performed, the process jumps to the step (257). If the operation has been performed, the process proceeds to the step (254).
[0106]
In step (254), it is checked whether the exposure correction value setting switch 63 is turned on. If it is turned on, the process proceeds to step (255). In step (255), an instruction signal is transmitted to a camera in a slave camera mode, which is a camera capable of taking a picture, so as to change the exposure correction value in accordance with the operation amount of the electronic dial detected in the processing in step (253). Thus, the control signal is output to the transmission / reception circuit 42.
[0107]
If it is determined in step (254) that the exposure correction value setting switch 63 has not been turned on, the process proceeds to step (256).
In step (256), if the exposure mode selected in accordance with the operation amount of the electronic dial detected in the processing in step (253) is the shutter priority AE mode, the set value of the exposure time is set. In the case of the aperture priority AE mode, a control signal is output to the transmission / reception circuit 42 so as to transmit an instruction signal to a camera in a slave camera mode which is a camera capable of photographing so as to change the set value of the aperture value. .
[0108]
As described above, the operation of the non-capturable camera set to the master camera mode changes the photographic information such as the exposure correction value, shutter speed, and aperture value of the photographic camera set to the slave camera mode. When the step (255) or the step (256) is completed, the process proceeds to a step (257).
[0109]
In step (257), the user inputs the line-of-sight input information started in step (205) or the information on the pointer position based on the information of the pointing means 64.
[0110]
In step (258), it is determined whether or not to change the photographable camera based on the input information on the pointer position. The determination method is the same as that of the step (222).
[0111]
That is, if the position of the pointer display 73 in the display image of the image display means 21 is in the captured image set to the photographable camera at this stage, the photographable camera is not changed, and the position of the pointer display 73 is changed to the current position. If there is a captured image set in the non-photographable camera at the stage, the photographable camera is changed. If there is no change in the photographable camera, the process returns to step (201), but if there is a change in the photographable camera, the process proceeds to step (259).
[0112]
In step (259), it is checked whether or not the own camera 10-1 is set as a photographable camera by changing the photographable camera. If so, go to step (260).
[0113]
In step (260), the own camera, which is the first camera 10-1 previously set as the non-capturable camera in the master camera mode, is changed to the photographic camera in the master camera mode.
[0114]
In step (261), a control signal is output to the transmission / reception circuit 42 so that the camera which has been operated in the slave camera mode and has been set as a photographable camera so as to change the setting to a non-photographable camera is communicated. I do.
[0115]
In step (262), a control signal is output to the signal processing circuit 44 so as to switch to a composite display in which a captured image of the own camera set as a photographable camera as illustrated in FIG. I do. Thereafter, the process returns to the step (201).
[0116]
If the own camera remains a non-capturable camera in the process of step (259) and the setting of the photographic camera is changed between other cameras operating in the slave camera mode, go to step (263). move on. As an example, it is assumed that the photographable camera is changed from the camera 10-2 to the camera 10-3.
[0117]
In step (263), the transmission / reception circuit 42 is operated to change the setting of the second camera 10-2, which has been operated in the slave camera mode and has been set as a photographable camera, to a non-capturable camera. A transmission / reception circuit for outputting a control signal and performing communication, and changing the setting of the third camera 10-3, which has been operated in the slave camera mode and has been set as a non-capturable camera, with a photographic camera, A control signal is output to the CPU 42 to perform communication.
[0118]
In step (264), a control signal is output to the signal processing circuit 44 so that the captured image of the third camera 10-3 is switched to the composite display in which the captured image has become a large area in accordance with the change of the camera capable of capturing the image. Thereafter, the process returns to the step (201).
[0119]
Next, the operation of the camera set to the slave camera mode will be described. If the information of the operation mode selection switch 66 has been set to the slave camera mode in the processing in step (121) of FIG. 4 described above, the process proceeds to step (301) of FIG.
[0120]
In step (301), it is further checked from the information of the operation mode selection switch 66 whether or not the mode is such that all of the plurality of electronic still cameras are in the simultaneous shooting mode. If not, that is, if it is a mode in which shooting is performed by one selected camera, the process proceeds to step (302).
[0121]
In step (302), the camera set in the slave camera mode is initialized as a non-capturable camera.
Next, in step (303), the transmission / reception circuit 42 is controlled to communicate with another camera set in the master camera mode via the antenna 40.
[0122]
In step (304), if communication with another camera set in the master camera mode has been correctly established, the process proceeds to step (305). If communication is not established properly, such as when there is no response from another camera or when there are multiple cameras set in the master camera mode or there are no cameras set in the master camera mode, the multiple camera mode is set to normal. Since it cannot be operated, error processing such as operation prohibition is performed.
[0123]
In step (305), information on the exposure mode selection switch 67 is input. If the selected exposure mode is the shutter priority AE mode, a setting value such as 1/125 is initialized, and if the selected exposure mode is the aperture priority AE mode, a setting value such as F5.6 is initialized.
[0124]
In step (306), a control signal is output to the signal processing circuit 44, a predetermined accumulation time and a readout gain are set, and the image pickup device 12 is driven to start image pickup for the electronic viewfinder.
[0125]
In step (307), luminance information in the screen is input from the imaging information to determine whether or not the captured image has an appropriate brightness. If the brightness is not appropriate, the accumulation time of the imaging element 12 is changed or The brightness of the captured image is adjusted by changing the readout gain.
[0126]
Further, the main imaging is performed in accordance with the information on the accumulation time when the captured image has become appropriate brightness, the information on the readout gain, the exposure mode information input in the processing of (305), the set value in the exposure mode, and the set exposure correction value. The exposure time and aperture value are calculated and displayed on the display 48.
[0127]
In step (308), the transmission / reception circuit 42 is controlled to control the other camera set in the master camera mode via the antenna 40 for the electronic viewfinder imaging started in the processing of step (306). Start transmitting image information.
[0128]
In step (309), a control signal is output to the focus detection sensor 20 to perform signal accumulation, and then A / D conversion is performed while reading out the signal accumulated in the focus detection sensor 20. Further, various necessary data correction such as shading is performed on the read digital data. Lens information and the like necessary for performing focus detection are input from the lens control unit 51, and the focus state of each part of the photographing screen is calculated from this and digital data obtained from the focus detection sensor 20.
[0129]
In step (310), a lens movement amount for focusing is calculated according to the calculated focus state, and the calculated lens movement amount is output to the lens control means 51. In accordance with this, the lens control means 51 outputs a signal to the first motor driver 52 so as to drive the focus adjusting lens, and drives the first motor 53. As a result, the photographic lens is brought into focus with respect to the subject.
[0130]
In step (311), the setting of the camera set in the master camera mode via the antenna 40 to the own camera which has been operated in the slave camera mode and has been set as a non-capturable camera so far is changed to a capable camera. Check if a control signal is being sent. If the control signal for changing the setting has not been transmitted to the photographable camera, the process returns to step (303) and repeats the step. If the control signal for changing the setting to the photographable camera has been transmitted, the process proceeds to step (312).
[0131]
In step (312), the own camera that has been operated in the slave camera mode and has been set as a non-capturable camera is changed to a photographic camera that operates in the slave camera mode. Proceed to step (321) in FIG.
[0132]
In step (321), it is checked whether or not a release instruction signal for performing photographing is transmitted from the camera set in the master camera mode via the antenna 40. If the release instruction signal has not been transmitted, the process proceeds to step (322).
[0133]
In step (322), it is checked whether or not an instruction signal for changing the set value of the exposure time or the aperture value is transmitted from the camera set in the master camera mode via the antenna 40. As a result of this check, if the instruction signal for changing the set value has not been transmitted, the process proceeds to step (324), but if the instruction signal for changing the set value has been transmitted, the process proceeds to step (323).
[0134]
In step (323), the set value of the exposure time or the aperture value is changed according to the transmitted instruction signal for changing the set value.
Next, in step (324), it is checked whether or not an instruction signal for changing the exposure correction value is transmitted from the camera set in the master camera mode via the antenna 40. If the instruction signal for changing the exposure correction value has not been transmitted, the process proceeds to step (326), but if the instruction signal for changing the exposure correction value has been transmitted, the process proceeds to step (325).
[0135]
In step (325), the exposure correction value is changed according to the transmitted instruction signal for changing the exposure correction value.
Next, the process proceeds to step (326), in which the camera set in the master camera mode via the antenna 40 and the own camera that has been operated in the slave camera mode and has been set as a photographable camera so far can be set as a non-capable camera. Check if a control signal to change the setting is sent.
[0136]
As a result of the check, if the control signal for changing the setting to the non-capturable camera has not been transmitted, the process returns to step (321) and repeats the step. If the control signal for changing the setting to the non-capturable camera has been transmitted, the process proceeds to step (327).
[0137]
In step (327), the own camera that has been operating in the slave camera mode and has been set as a photographable camera is changed to a non-photographable camera that operates in the slave camera mode. Thereafter, the process returns to step (303) in FIG.
[0138]
If it is determined in step (321) that the camera set in the master camera mode has transmitted a release instruction signal for performing shooting, the process proceeds to step (331).
[0139]
In step (331), the aperture value information calculated in the process of step (307) is output to the lens control unit 51. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is brought into the aperture stop state.
[0140]
In the step (332), the signal processing circuit 44 is instructed to set the accumulation time of the image sensor 12 according to the exposure time calculated in the process of the step (307) and to perform the main imaging by the image sensor 12. Is output. At this time, in the case of a low luminance scene or the like, the flash unit 47 emits light as necessary.
[0141]
In step (333), a signal is output to the lens control means 51 so that the diaphragm 31 is in a light-shielding state. In accordance with this signal, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the photographing lens enters a light-shielding state.
[0142]
In step (334), the image data obtained by the main imaging is read from the image sensor 12 while performing A / D conversion, and an instruction is output to the signal processing circuit 44 to perform necessary correction processing and signal processing.
[0143]
In step (335), information is output to the lens control means 51 so as to open the aperture 31. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is in the aperture open state.
[0144]
In step (336), an instruction is output to the signal processing circuit 44 to convert the captured image information read in the processing in step (334) into a recording file format and store it in the storage means 46.
[0145]
As described above, when the release switch 61 of the camera set to the master camera mode is operated while the camera set to the slave camera mode in the multiple camera mode is a photographable camera, the camera switches to the slave camera mode. Shooting is performed on the set camera side.
[0146]
Lastly, an operation in a mode in which all electronic still cameras simultaneously shoot images will be described.
In the step (122) of FIG. 4 described above, if the camera set to the master camera mode is set to the mode in which all of the plurality of electronic still cameras are in the simultaneous shooting mode based on the information of the operation mode selection switch 66, FIG. Proceed to 10 (401).
[0147]
In step (401), the transmission / reception circuit 42 is controlled to start communication with another camera set in the slave camera mode via the antenna 40.
Next, in step (402), if communication with another camera set in the slave camera mode has been correctly established, the process proceeds to step (403). If communication is not established properly because there is no response from another camera or there is another camera set in the master camera mode, the multiple camera mode cannot be operated normally. I do.
[0148]
In step (403), information on the exposure mode selection switch 67 is input. If the selected exposure mode is the shutter priority AE mode, a setting value such as 1/125 is initialized, and if the selected exposure mode is the aperture priority AE mode, a setting value such as F5.6 is initialized.
[0149]
In step (404), the information of the pointer selection switch 65 is input, and it is checked whether the setting of the pointer input is set to be performed by the line of sight input or by the pointing means 64.
[0150]
Further, when the setting of the pointer input is set to be performed by the line of sight input, the infrared light emitting diode 27 is turned on to input the eyeball image of the photographer formed on the image sensor 24 for line of sight detection. To start detecting the gaze direction of the photographer. When the setting of the pointer input is set to be performed by the pointing means 64, the information input of the pointing means 64 is started.
[0151]
In step (405), a control signal is output to the signal processing circuit 44, a predetermined accumulation time and a readout gain are set, and the image pickup device 12 is driven to start image pickup for the electronic viewfinder.
[0152]
In step (406), luminance information in the screen is input from the imaging information to determine whether or not the captured image has appropriate brightness. If the brightness is not appropriate, the accumulation time of the image sensor 12 is changed or The brightness of the captured image is adjusted by changing the readout gain.
[0153]
In addition, according to the information on the accumulation time when the captured image has become appropriate brightness, the information on the readout gain, the exposure mode information input in the processing of the step (403), the set value in the exposure mode, and the set exposure correction value. The exposure time and aperture value for imaging are calculated and displayed on the display 48.
[0154]
In step (407), the transmission / reception circuit 42 is controlled to start receiving image pickup image information for the electronic viewfinder from another camera set to the slave camera mode via the antenna 40, and inputs the information to the signal processing circuit 44. To do.
[0155]
In step (408), the captured image of the own camera started in the processing of step (405) and the captured image received from another camera set in the slave camera mode started in the processing of step (407) And outputs a control signal to the signal processing circuit 44 so as to be displayed on the image display means 21.
[0156]
As a specific display example, an image captured by the own camera set in the master camera mode as shown in FIG. 16A is displayed in a larger area than other cameras, and thereafter, a large area is displayed. The image to be displayed may be switched at any time by inputting a pointer, or all the images may be displayed in the same size because the mode is a mode in which all cameras simultaneously shoot.
[0157]
In step (409), a control signal is output to the focus detection sensor 20 to perform signal accumulation, and then A / D conversion is performed while reading out the signal accumulated in the focus detection sensor 20. Further, various necessary data correction such as shading is performed on the read digital data.
[0158]
Lens information and the like necessary for performing focus detection are input from the lens control unit 51, and the focus state of each part of the photographing screen is calculated from this and digital data obtained from the focus detection sensor 20.
[0159]
In step (410), the amount of lens movement for focusing is calculated according to the calculated focus state, and the calculated amount of lens movement is output to the lens control means 51. In accordance with this, the lens control means 51 outputs a signal to the first motor driver 52 so as to drive the focus adjusting lens, and drives the first motor 53. As a result, the photographic lens is brought into focus with respect to the subject.
[0160]
Next, the process proceeds to step (411) in FIG.
In step (411), it is checked whether the release switch 61 is turned on. If the result of this check is that the release switch 61 has not been turned on, the flow proceeds to step (412).
[0161]
In step (412), it is checked whether the electronic dial 62 is operated. If it is not operated, the process returns to the step (401), but if it is operated, the process proceeds to step (413).
[0162]
In step (413), it is checked whether the exposure compensation value setting switch 63 is turned on. If the result of this check is that the switch is on, the operation proceeds to step (414). In step (414), an instruction signal is transmitted to a camera in a slave camera mode, which is a camera capable of taking a picture, so as to change the exposure correction value according to the operation amount of the electronic dial detected in the processing in step (412). Thus, the control signal is output to the transmission / reception circuit 42.
[0163]
In step (415), the exposure correction value is changed according to the operation amount of the electronic dial detected in the processing in step (412). The initial value of the exposure correction value is set to 0. Thereafter, the process returns to the step (401), so that when the exposure correction value is changed, the exposure time and aperture value for the actual imaging in the step (406) are calculated again, and the change in the exposure correction value is calculated as the exposure time and the aperture value. This is reflected in the aperture value. If the exposure correction value setting switch 63 has not been turned on in the process of step (413), the process proceeds to step (416).
[0164]
In step (416), if the exposure mode selected according to the operation amount of the electronic dial detected in the processing in step (412) is the shutter priority AE mode, the set value of the exposure time is set. In the case of the aperture priority AE mode, a control signal is output to the transmission / reception circuit 42 so as to transmit an instruction signal to a camera in a slave camera mode which is a camera capable of photographing so as to change the set value of the aperture value. .
[0165]
In step (417), if the exposure mode selected in accordance with the operation amount of the electronic dial detected in the processing in step (412) is the shutter priority AE mode, the set value of the exposure time is set. If the mode is the aperture priority AE mode, the set value of the aperture value is changed.
[0166]
Thereafter, the process returns to step (401), so that if the set value is changed, the exposure time and aperture value for the actual imaging in step (406) are calculated again, and the change in the set value is reflected on the exposure time and aperture value. Is done.
[0167]
If the release switch 61 has been turned on in the processing of step (411), the flow advances to step (418). In step (418), a control signal is output to the transmission / reception circuit 42 so as to communicate a release instruction signal for performing photography to the photographable camera in the slave camera mode.
[0168]
In step (419), the aperture value information calculated in the process of step (406) is output to the lens control unit 51. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is brought into the aperture stop state.
[0169]
In the step (420), the signal processing circuit 44 is instructed to set the accumulation time of the image sensor 12 according to the exposure time calculated in the process of the step (406) and to perform the main imaging by the image sensor 12. Is output. At this time, in the case of a low luminance scene or the like, the flash unit 47 emits light as necessary.
[0170]
In step (421), a signal is output to the lens control means 51 so that the diaphragm 31 is in a light-shielding state. In accordance with this signal, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the photographing lens enters a light-shielding state.
[0171]
In step (422), the image data obtained by the main imaging is read from the image sensor 12 while performing A / D conversion, and an instruction is output to the signal processing circuit 44 to perform necessary correction processing and signal processing.
[0172]
In step (423), information is output to the lens control means 51 so as to open the aperture 31. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is in the aperture open state.
[0173]
In step (424), an instruction is output to the signal processing circuit 44 to convert the captured image information read in the processing in step (422) into a recording file format and store it in the storage means 46. When this step ends, the process returns to the step (401).
[0174]
Next, an operation of the camera set to the slave camera mode in a mode in which all the electronic still cameras simultaneously shoot images will be described.
[0175]
If it is determined in step (301) of FIG. 8 that the mode is such that all of the plurality of electronic still cameras are in the simultaneous shooting mode based on the information of the operation mode selection switch 66, the process proceeds to step (451) of FIG.
[0176]
In step (451), the transmission / reception circuit 42 is controlled to communicate with another camera set in the master camera mode via the antenna 40. Next, in step (452), if communication with another camera set in the master camera mode is correctly established, the process proceeds to step (453).
[0177]
Note that if communication is not established properly because there is no response from another camera, or there are multiple cameras set in the master camera mode or there are no cameras set in the master camera mode, the multiple camera mode is set to normal. Since it cannot be operated, error processing such as operation prohibition is performed.
[0178]
In step (453), information on the exposure mode selection switch 67 is input. If the selected exposure mode is the shutter priority AE mode, a setting value such as 1/125 is initialized, and if the selected exposure mode is the aperture priority AE mode, a setting value such as F5.6 is initialized.
[0179]
In step (454), a control signal is output to the signal processing circuit 44, a predetermined accumulation time and a readout gain are set, and the image pickup device 12 is driven to start image pickup for the electronic viewfinder.
[0180]
In step (455), luminance information in the screen is input from the imaging information to determine whether or not the captured image has appropriate brightness. If the brightness is not appropriate, the accumulation time of the imaging element 12 is changed or The brightness of the captured image is adjusted by changing the readout gain.
[0181]
Further, according to the information of the accumulation time when the captured image has become appropriate brightness, the information of the readout gain, the exposure mode information inputted in the processing of the step (453), the set value in the exposure mode, and the set exposure correction value. The exposure time and aperture value for imaging are calculated and displayed on the display 48.
[0182]
In step (456), the transmission / reception circuit 42 is controlled to control the other camera set in the master camera mode via the antenna 40 for the electronic viewfinder imaging started in the processing in step (454). Start transmitting image information.
[0183]
In step (457), a control signal is output to the focus detection sensor 20 to perform signal accumulation, and then A / D conversion is performed while reading out the signal accumulated in the focus detection sensor 20. Further, various necessary data correction such as shading is performed on the read digital data. Lens information and the like necessary for performing focus detection are input from the lens control unit 51, and the focus state of each part of the photographing screen is calculated from this and digital data obtained from the focus detection sensor 20.
[0184]
In step (458), a lens movement amount for focusing is calculated according to the calculated focus state, and the calculated lens movement amount is output to the lens control means 51. In accordance with this, the lens control means 51 outputs a signal to the first motor driver 52 so as to drive the focus adjusting lens, and drives the first motor 53. As a result, the photographic lens is brought into focus with respect to the subject.
[0185]
Next, the process proceeds to step (461) in FIG.
In step (461), it is checked whether or not a release instruction signal for performing photographing has been transmitted from the camera set in the master camera mode via the antenna 40. If the result of this check is that a release instruction signal has not been transmitted, the flow proceeds to step (462).
[0186]
In step (462), it is checked whether or not an instruction signal for changing the exposure time or the aperture value is transmitted from the camera set in the master camera mode via the antenna 40. If the instruction signal for changing the set value has not been transmitted, the process proceeds to step (464), but if the instruction signal for changing the set value has been transmitted, the process proceeds to step (463).
[0187]
In step (463), the set value of the exposure time or the aperture value is changed according to the transmitted instruction signal for changing the set value. Next, in step (464), it is checked whether or not an instruction signal for changing the exposure correction value has been transmitted from the camera set in the master camera mode via the antenna 40.
[0188]
As a result of this check, if the instruction signal for changing the exposure correction value has not been transmitted, the process returns to step (453), but if the instruction signal for changing the exposure correction value has been transmitted, the process proceeds to step (465). move on.
[0189]
In step (465), the exposure correction value is changed according to the transmitted instruction signal for changing the exposure correction value. Thereafter, the flow returns to step (453). If it is determined in step (461) that the camera set in the master camera mode has transmitted a release instruction signal for performing shooting, the flow advances to step (471).
[0190]
In step (471), the aperture value information calculated in the processing in step (455) is output to the lens control means 51. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is brought into the aperture stop state.
[0191]
In step (472), the signal processing circuit 44 is instructed to set the accumulation time of the image sensor 12 according to the exposure time calculated in the process of step (455) and to perform the main image pickup by the image sensor 12. Is output. At this time, in the case of a low luminance scene or the like, the flash unit 47 emits light as necessary.
[0192]
In step (473), a signal is output to the lens control means 51 so that the diaphragm 31 is in a light-shielding state. In accordance with this signal, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the photographing lens enters a light-shielding state.
[0193]
In step (474), the image information obtained by the main imaging is read from the image sensor 12 while performing A / D conversion, and an instruction is output to the signal processing circuit 44 to perform necessary correction processing and signal processing.
[0194]
In step (475), information is output to the lens control means 51 so as to open the aperture 31. According to this information, the lens control unit 51 outputs a signal to the second motor driver 54 so as to drive the aperture 31, and drives the second motor 55. As a result, the taking lens is in the aperture open state.
[0195]
In step (476), an instruction is output to the signal processing circuit 44 to convert the captured image information read in the processing in step (334) into a recording file format and store it in the storage means 46. Thereafter, the flow returns to step (453).
[0196]
This concludes the description of the present embodiment. As a method of communicating captured images and various instruction signals between a plurality of cameras, other than wireless communication using radio waves as described in the present embodiment, Alternatively, optical communication using infrared rays or the like may be considered, or wired communication connected by a cable may be applied. Further, the photographing by the three cameras in the embodiment is merely an example, and can be performed by two cameras, or can be performed by four or more cameras.
[0197]
(Another embodiment of the present invention)
The present invention may be applied to a system including a plurality of devices or an apparatus including one device.
[0198]
Also, a computer for connecting the various devices to a device or a computer in a system so as to operate various devices so as to realize the functions of the above-described embodiments. The present invention also includes a software program code supplied and implemented by operating the various devices according to a program stored in a computer (CPU or MPU) of the system or apparatus.
[0199]
In this case, the program code of the software itself realizes the function of the above-described embodiment, and the program code itself and a unit for supplying the program code to the computer, for example, storing the program code The storage medium described constitutes the present invention. As a storage medium for storing such a program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a magnetic tape, a nonvolatile memory card, a ROM, and the like can be used.
[0200]
When the computer executes the supplied program code, not only the functions described in the above-described embodiments are realized, but also the OS (Operating System) or other operating system running on the computer. Needless to say, the program code is also included in the present embodiment when the functions described in the above-described embodiment are realized in cooperation with application software or the like.
[0201]
Further, after the supplied program code is stored in a memory provided in a function expansion board of a computer or a function expansion unit connected to the computer, a CPU provided in the function expansion board or the function expansion unit based on the instruction of the program code. The present invention also includes a case where the functions of the above-described embodiments are implemented by performing part or all of the actual processing.
[0202]
Examples of embodiments of the present invention are listed below.
[Embodiment 1] A camera control device for controlling the operation of each camera when photographing a subject by using a plurality of cameras simultaneously, wherein one of the plurality of cameras can be photographed. A photographable camera setting means for setting as a camera, a video display means capable of displaying images from the plurality of cameras in a list, and an image from the photographable camera set by the photographable camera setting means. Display control means for displaying the image on the image display means so as to be larger than the image from the camera.
[0203]
[Second Embodiment] The camera control device according to the first embodiment, wherein the plurality of cameras have communication means for mutually communicating with other cameras.
[0204]
[Third Embodiment] The camera control device according to the first or second embodiment, wherein the photographable camera setting means sets one camera among the own camera and another camera as a photographable camera.
[0205]
[Embodiment 4] When the camera set as the photographable camera by the photographable camera setting means is the own camera, shooting is performed by the own camera according to the release operation of the photographer, and When the set camera is another camera, a photographing instruction signal is transmitted by the communication unit to another camera set as a photographable camera in response to a release operation of a photographer. The camera control device according to any one of aspects 1 to 3.
[Embodiment 5] A camera control method for controlling the operation of each camera when shooting an object using a plurality of cameras simultaneously, wherein one of the plurality of cameras can be shot. A photographable camera setting process for setting as a camera, and images from the plurality of cameras are displayed as a list on a display device, and the image from the photographable camera set by the photographable camera setting process is used as another image. A display control process for displaying the image so as to be larger than an image from the camera.
[0206]
[Sixth Embodiment] The camera control method according to the fifth embodiment, wherein the plurality of cameras perform a communication process for mutually communicating with another camera.
[0207]
[Seventh Embodiment] The camera control method according to the fifth or sixth embodiment, wherein the photographable camera setting means sets one camera among the own camera and another camera as a photographable camera.
[0208]
[Embodiment 8] When the camera set as the photographable camera by the photographable camera setting means is the own camera, shooting is performed by the own camera in accordance with the release operation of the photographer, and the camera is set as the shootable camera. When the set camera is another camera, a photographing instruction signal is transmitted by the communication unit to another camera set as a photographable camera in response to a release operation of a photographer. The camera control method according to any one of aspects 5 to 7.
[0209]
[Embodiment 9] A program for causing a computer to execute a camera control method for controlling the operation of each camera when using a plurality of cameras at the same time to photograph a subject, wherein , A photographable camera setting process for setting one camera as a photographable camera, displaying images from the plurality of cameras in a list on a display device, and photographing set by the photographable camera setting process. A computer program for causing a computer to execute display control processing for displaying an image from a possible camera to be larger than an image from another camera.
[Embodiment 10] A computer-readable recording medium on which the computer program according to Embodiment 9 is recorded.
[Embodiment 11] The camera control device according to any one of Embodiments 1 to 4, wherein the camera control device is provided in a master camera in a plurality of camera groups.
[0210]
【The invention's effect】
As described above, according to the present invention, when photographing a subject using a plurality of cameras, one of the cameras is set as a photographable camera, and images from the plurality of cameras are set. Are displayed in a list on the video display device, and the video from the camera set to be photographable is displayed on the video display device so as to be larger than the video from other cameras. Images captured by a plurality of cameras can be displayed in one display device, and a large image from a camera set as a camera capable of capturing images can be displayed. This makes it possible to instantaneously determine the most suitable camera for photographing, and to switch the camera for photographing.
Further, according to another feature of the present invention, since communication means for mutually communicating with another camera is provided, image information based on a signal output from each camera is transmitted to another camera by the communication means. The communication means can receive a shooting instruction from another camera.
According to another feature of the present invention, one camera is set as a photographable camera among cameras provided in itself and another camera. It is possible to provide a camera system that can make a determination and can switch a camera for shooting.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating an embodiment of the present invention and illustrating an arrangement of optical members of a camera and an interchangeable lens according to the embodiment.
FIG. 2 is a diagram illustrating a configuration of a rear surface of the camera.
FIG. 3 is a block diagram illustrating a configuration example of an electric circuit of a camera and an interchangeable lens.
FIG. 4 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 5 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 6 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 7 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 8 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 9 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 10 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 11 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 12 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 13 is a flowchart illustrating an operation procedure of a control unit of the camera.
FIG. 14 is a diagram illustrating a display example of an electronic viewfinder.
FIG. 15 is a diagram illustrating simultaneous use of a plurality of cameras.
FIG. 16 is a diagram illustrating a display example of an electronic viewfinder when a plurality of cameras are used at the same time.
[Explanation of symbols]
10 Camera body
12 Image sensor
13 Primary mirror
20 Focus detection sensor
21 Image display means
24 Gaze detection imaging device
30 interchangeable lenses
31 Aperture
40 antenna
41 Camera control means
42 Transmission / Reception Circuit
44 signal processing circuit
51 Interchangeable lens control means
64 pointing means
66 Operation mode selection switch

Claims (1)

A camera control device for controlling the operation of each camera when shooting an object using a plurality of cameras simultaneously,
Photographable camera setting means for setting one of the plurality of cameras as a photographable camera;
Image display means capable of displaying images from the plurality of cameras in a list,
Display control means for displaying the image from the photographable camera set by the photographable camera setting means on the image display means so as to be larger than the images from the other cameras. apparatus.

Images