JP4646725B2 - IMAGING DEVICE AND IMAGING DEVICE CONTROL METHOD - Google Patents

Description

The present invention relates to an imaging apparatus capable of displaying a luminance distribution of a subject together with a subject image on a display unit and capable of correcting exposure .

  Generally, a digital camera that records a digital image using an image pickup device such as a CCD is provided with a display panel such as an LCD. In addition to displaying the photographed image on the display panel, the display panel is used as an electronic viewfinder (hereinafter referred to as EVF) by displaying a moving image of the subject before photographing, and also related to photographing. What is designed to display various types of information on the EVF has been put into practical use.

  For example, Patent Literature 1 and Patent Literature 2 disclose a technique for displaying a luminance distribution of a subject together with a subject image on a finder as a histogram, and shows that the histogram display fluctuates due to exposure correction.

  Further, the conventional digital camera uses an image sensor with a narrow dynamic range such as a CCD. Therefore, when metering is performed using an exposure value obtained by adding exposure compensation to the appropriate exposure value calculated by a digital camera, the subject brightness falls outside the dynamic range until exposure accuracy deteriorates or falls within the dynamic range. Since the photometry and the exposure control are alternately repeated, the operation response is deteriorated.

  For this reason, in order to place importance on exposure accuracy and operation response, a digital camera has been proposed in which an appropriate exposure value is used as an EVF exposure value without adding an exposure correction value.

Japanese Patent No. 3387143 JP 2001-245204 A

In the above-described digital camera, no exposure correction value is added to the EVF exposure value. Therefore, when determining the exposure value for shooting while viewing the histogram displayed on the EVF, the exposure correction value is adjusted. There was a problem that it was difficult to perform accurately.
SUMMARY OF THE INVENTION In view of the above-described problems, an object of the present invention is to make it possible to accurately adjust an exposure correction value without deteriorating exposure accuracy and operation response during release.

When an exposure correction value is set , the image pickup apparatus of the present invention uses an appropriate exposure value that does not apply exposure correction for the exposure value for viewfinder display, and corrects the exposure correction to the appropriate exposure value for the exposure value for shooting. In the imaging device configured to use the added exposure value, the first operation mode in which the brightness distribution is displayed on the finder display device and exposure correction is performed, and the brightness distribution is displayed. An operation mode control means for controlling a second operation mode that is not operated, an operation mode determination means for determining whether the operation is in the first operation mode or the second operation mode, and the operation mode. As a result of determination by the determination means, when operating in the first operation mode, an exposure value obtained by adding exposure correction to an appropriate exposure value is used as an exposure value for finder display, and the operation is performed in the second operation mode. If you are in the exposure value for the viewfinder display and having a exposure value selecting means for selecting to use a proper exposure value without the addition of exposure compensation.

  According to the present invention, when displaying the luminance distribution, the exposure value obtained by adding exposure correction to the appropriate exposure value is used as the exposure value for EVF, and the EVF exposure value is temporarily returned to the appropriate exposure. After that, photometry was performed. This makes it possible to accurately adjust the exposure correction value for determining the exposure value at the time of photographing while confirming the display showing the luminance distribution of the EVF without deteriorating the exposure accuracy and the operation response at the time of release. It becomes possible.

The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.
The embodiment described below is an example as means for realizing the present invention, and should be appropriately modified or changed according to the configuration and various conditions of the apparatus to which the present invention is applied. It is not limited to the embodiment.

[Description of device]
FIG. 1 is a block diagram illustrating a configuration of an imaging apparatus according to an embodiment of the present invention.
In FIG. 1, reference numeral 100 denotes an image pickup apparatus represented by a digital camera or the like. Reference numeral 10 denotes a photographing lens, 12 denotes a shutter having a diaphragm function, 14 denotes an image sensor that converts an optical image into an electrical signal, and 16 denotes an A / D converter that converts an analog signal output from the image sensor 14 into a digital signal.
A timing generator 18 supplies a clock signal and a control signal to the image sensor 14, the A / D converter 16, and the D / A converter 26 and is controlled by the memory controller 22 and the system controller 50.

  An image processing unit 20 performs predetermined pixel interpolation processing and color conversion processing on the data from the A / D conversion unit 16 or the data from the memory control unit 22. The image processing unit 20 performs predetermined calculation processing using the captured image data, and the system control unit 50 controls the exposure control unit 40 and the distance measurement control unit 42 based on the obtained calculation result. TTL (through-the-lens) AF (autofocus) processing, AE (automatic exposure) processing, and EF (strobe pre-flash) processing are performed.

  Further, the image processing unit 20 performs predetermined calculation processing using the captured image data, and also performs TTL AWB (auto white balance) processing based on the obtained calculation result.

  A memory control unit 22 controls the A / D conversion unit 16, the timing generation unit 18, the image processing unit 20, the image display memory 24, the D / A conversion unit 26, the memory 30, and the compression / decompression unit 32. Then, the data of the A / D converter 16 passes through the image processor 20 and the memory controller 22, or the data of the A / D converter 16 passes directly through the memory controller 22 and the image display memory 24 or the memory 30. Is written to.

  Reference numeral 24 denotes an image display memory, 26 denotes a D / A conversion unit, 28 denotes an image display unit composed of a TFT LCD or the like, and display image data written in the image display memory 24 passes through the D / A conversion unit 26. Displayed by the image display unit 28.

  An electronic viewfinder (EVF) function can be realized by sequentially displaying image data captured using the image display unit 28. The image display unit 28 can arbitrarily turn on / off the display according to an instruction from the system control unit 50. When the display is turned off, the power consumption of the imaging apparatus 100 can be significantly reduced. it can.

  Reference numeral 30 denotes a memory for storing captured still images and moving images, and has a sufficient storage capacity to store a predetermined number of still images and a predetermined time of moving images. As a result, in continuous shooting or panoramic shooting in which a plurality of still images are continuously shot, and in the case of moving image shooting, it is possible to write a large amount of images to the memory 30 at high speed. Become.

The memory 30 can also be used as a work area for the system control unit 50.
A compression / decompression unit 32 compresses and decompresses image data by adaptive discrete cosine transform (ADCT) or the like, reads an image stored in the memory 30, and performs compression processing or decompression processing in, for example, JPEG or MPEG format. The data that has been processed is written into the memory 30.

  Reference numeral 40 denotes an exposure control unit that controls the shutter 12 having a diaphragm function, and has a flash light control function in cooperation with the flash 48. Reference numeral 42 denotes a distance measurement control unit that controls focusing of the photographing lens 10, reference numeral 44 denotes a zoom control unit that controls zooming of the photographing lens 10, and reference numeral 46 denotes a barrier control unit that controls the operation of the protection unit 102 serving as a barrier. A strobe 48 has an AF auxiliary light projecting function and a strobe dimming function.

  The exposure control unit 40 and the distance measurement control unit 42 are controlled using the TTL method. Based on the calculation result obtained by calculating the captured image data by the image processing unit 20, the system control unit 50 performs the exposure control unit 40 and the distance measurement. The controller 42 is controlled. Reference numeral 50 denotes a system control unit that controls the entire imaging apparatus 100, and reference numeral 52 denotes a memory that stores constants, variables, programs, and the like for operation of the system control unit 50.

  Reference numeral 54 denotes a display unit such as a liquid crystal display device or a speaker that displays an operation state or a message using characters, images, sounds, or the like in accordance with execution of a program in the system control unit 50, and an operation unit of the imaging device 100 A single or a plurality of locations are provided in the vicinity where they are easily visible, and are configured by a combination of, for example, an LCD, an LED, and a sounding element.

  Among the display contents of the display unit 54, what is displayed on the LCD, etc., is an operation mode display, single shot / continuous shooting display, self-timer display, compression rate display, recording pixel number display, number of recordings display, remaining shooting possible Number display, shutter speed display, aperture value display, exposure compensation display, strobe display, red-eye reduction display, macro shooting display, buzzer setting display, clock battery level display, battery level display, error display, multi-digit number Information display, recording medium 200 and 210 attachment / detachment status display, communication I / F operation display, date / time display, and the like. Among the display contents of the display unit 54, what is displayed in the optical viewfinder 104 includes in-focus display, camera shake warning display, strobe charge display, and the like.

  Reference numeral 56 denotes an electrically erasable / recordable nonvolatile memory such as an EEPROM. Reference numerals 60, 62, 64, 66, and 70 are operation units for inputting various operation instructions of the system control unit 50, and include one or a plurality of switches, dials, touch panels, pointing by line-of-sight detection, voice recognition devices, and the like. Composed of a combination.

Next, a specific description of these operation units will be given.
Reference numeral 60 denotes a mode dial switch, which can switch and set various function modes such as power-off, automatic shooting mode, shooting mode, panoramic shooting mode, playback mode, multi-screen playback / erase mode, and PC connection mode.

  Reference numeral 62 denotes a shutter switch SW1, which is turned on during the operation of a shutter button (not shown), and performs AF (autofocus) processing, AE (automatic exposure) processing, AWB (auto white balance) processing, EF (strobe preflash) processing, and the like. Instruct to start operation.

  Reference numeral 64 denotes a shutter switch SW2, which is turned on when the operation of a shutter button (not shown) is completed, and an exposure process for writing a signal read from the image sensor 14 to the memory 30 via the A / D converter 16 and the memory controller 22. Development processing using calculation in the image processing unit 20 or the memory control unit 22, recording processing for reading out image data from the memory 30, compression in the compression / decompression unit 32, and writing the image data in the recording medium 200 or 210. Instructs the start of a series of processing operations.

  Reference numeral 66 denotes an attitude detection unit composed of an inclination sensor, which detects the attitude of the apparatus such as whether the imaging apparatus is set in the horizontal position or the vertical position. 70 is an operation unit composed of various buttons, a touch panel, etc., a menu button, a set button, a macro button, a multi-screen playback page break button, a strobe setting button, a single shooting / continuous shooting / self-timer switching button, menu movement + (plus) Button, menu shift- (minus) button, playback image shift + (plus) button, playback image shift- (minus) button, shooting image quality selection button, exposure correction button, date / time setting button, and the like.

  A power control unit 80 includes a power detection circuit, a DC-DC converter, a switch circuit that switches a block to be energized, and the like, whether or not an external power source is connected, whether or not a battery is installed, the type of battery, and the remaining battery level. Is detected, the DC-DC converter is controlled based on the detection result and the instruction of the system control unit 50, and a necessary voltage is supplied to each unit including the recording medium for a necessary period.

  Reference numerals 82 and 84 denote connectors, and reference numeral 86 denotes a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, NiMH battery, or Li battery, an AC adapter, or an external battery.

  90 and 94 are interfaces with a recording medium such as a memory card or a hard disk, 92 and 96 are connectors for connecting to a recording medium such as a memory card or a hard disk, and 98 is a recording medium 200 or 210 attached to the connector 92 or 96. It is a recording medium detection part which detects whether it is.

  In the present embodiment, it is assumed that there are two interfaces and connectors for attaching a recording medium. Of course, the interface and the connector for attaching the recording medium may have a single or a plurality of systems and any number of systems. Moreover, it is good also as a structure provided with combining the interface and connector of a different standard. The interface and connector may be configured using a PCMCIA card, a CF (Compact Flash (registered trademark)) card, or the like that conforms to a standard.

  Further, when the interfaces 90 and 94 and the connectors 92 and 96 are configured using a PCMCIA card, a CF card, or the like, a LAN card, modem card, USB card, IEEE1394 card, P1284 card, SCSI card, By connecting various communication cards such as a communication card such as a PHS, image data and management information attached to the image data can be transferred to and from other computers and peripheral devices such as a printer.

  A protection unit 102 is a barrier that prevents the imaging unit from being soiled or damaged by covering the imaging unit including the lens 10 of the imaging device 100. A communication unit 110 has various communication functions such as RS232C, USB, IEEE1394, P1284, SCSI, modem, LAN, and wireless communication.

  Reference numeral 112 denotes a connector for connecting the imaging apparatus 100 to another device by the communication unit 110 or an antenna in the case of wireless communication. Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. The recording medium 200 includes a recording unit 202 composed of a semiconductor memory, a magnetic disk, and the like, an interface 204 with the imaging device 100, and a connector 206 that connects to the imaging device 100.

Reference numeral 210 denotes a recording medium such as a memory card or a hard disk.
The recording medium 210 includes a recording unit 212 composed of a semiconductor memory, a magnetic disk, and the like, an interface 214 with the imaging device 100, and a connector 216 that connects to the imaging device 100.

Next, an embodiment of the present invention will be described using the above-described imaging apparatus.
(First embodiment)
Here, the operation of the imaging apparatus according to the first embodiment will be described.
FIG. 2 is a flowchart showing an exposure control operation for EVF in the imaging apparatus 100 according to the present embodiment. Hereinafter, with reference to FIG. 2, the operation of EVF exposure control depending on the presence or absence of histogram display in the imaging apparatus 100 will be described. In the present embodiment, exposure correction refers to changing the exposure state by the level intended by the user from the proper exposure state, and the exposure correction value refers to the magnitude of the level intended by the user.

  When the EVF exposure control is started, the system control unit 50 determines whether or not the histogram is being displayed in step S100. As a result of this determination, if the histogram is not being displayed, the exposure correction value is not added to the EVF exposure value, as will be described later, and the process proceeds to step S104.

  On the other hand, if the result of determination in step S100 is that a histogram is being displayed, the system control unit 50 determines whether or not exposure correction is being performed in step S101. If the result of this determination is that exposure compensation is not in progress, processing proceeds to step S104. If the result of determination in step S101 is that exposure correction is in progress, the system control unit 50 advances the processing to step S102 and stops updating the EVF display so that the image obtained from the image sensor 14 is not displayed on the EVF. To do.

  Thereafter, the process proceeds to step S103, where an appropriate exposure setting for setting the exposure correction value to “0” is performed, and the process proceeds to step S104. At this time, although the exposure conditions of the image sensor 14 change, since the display update of the EVF is stopped in step S102, the change in luminance is not recognized by the user.

  Next, the system control unit 50 exposes the image sensor 14 under the exposure condition where the exposure correction value becomes “0” in step S104. Next, the process proceeds to step S105, the image signal is read from the image sensor 14 following the completion of exposure, and then the luminance signal of the subject is extracted by the image processing unit 20 in step S106 to obtain the luminance value, and the obtained luminance The difference between the value and the luminance value at which the luminance signal of the subject is appropriate is calculated. Next, in step S107, the system control circuit 50 converts the luminance difference calculated in step S106 into an exposure difference, and determines whether the exposure difference is within an appropriate range.

  If the result of this determination is that it is not within the appropriate range, the system control unit 50 proceeds to step S108 and changes the exposure based on the converted exposure difference. Thereafter, the process proceeds to step S104, and exposure for photometry is performed again.

  On the other hand, if the result of determination in step S107 is that the exposure difference is within the appropriate range, the system control unit 50 proceeds to step S109 and determines whether or not the histogram is being displayed. If the result of this determination is that the histogram is not being displayed, processing proceeds to step S113, where it is determined whether or not processing has ended. If the result of this determination is that processing has not ended, the process proceeds to step S100, and photometry and exposure control are repeated until an interrupt operation such as release is entered. Therefore, as described above in step S100, the exposure correction value is not added to the EVF exposure value unless the histogram is being displayed.

  On the other hand, if the result of determination in step S109 is that a histogram is being displayed, the system control unit 50 determines whether or not exposure correction is being performed in step S110. If the result of this determination is that exposure compensation is not in progress, control proceeds to step S113, where it is determined whether or not an end state has been reached as described above.

  If the result of determination in step S110 is that exposure correction is in progress, the system control unit 50 proceeds to step S111, changes the exposure value by adding the exposure correction value to the exposure value at this time, and performs imaging in step S112. The display update of the EVF is restarted so that the image obtained from the element 14 is displayed on the EVF.

  Next, in step S113, it is determined whether or not to end the process. If the result of this determination is that it does not end, the process proceeds to step S100, and photometry and exposure control processing are repeated until an interrupt operation such as a release is entered. The above is the exposure control operation for EVF shown in FIG.

  As described above, according to the present embodiment, when the histogram display is not performed, the appropriate exposure value is set as the EVF exposure value, and when the histogram display is performed, the exposure correction value is added to the EVF exposure value. Switched to. As a result, even in a digital camera configured to use an appropriate exposure value without adding an exposure correction value to the EVF exposure value, the exposure value at the time of shooting is determined while checking the EVF histogram display. Therefore, it is possible to accurately adjust the exposure correction value. Further, when histogram display is performed with emphasis on the exposure accuracy and the operation response at the time of release, exposure control is avoided in a portion where the linearity of the output of the image sensor is not maintained.

(Second Embodiment)
Next, with reference to FIG. 3, the operation of the imaging apparatus according to the second embodiment of the present invention will be described.
FIG. 3 is a flowchart showing an exposure control operation for photographing in the imaging apparatus 100 of the present embodiment.
With reference to FIG. 3, an exposure control operation for photographing based on a release instruction or the like during histogram display in the imaging apparatus 100 will be described.

  When the system control unit 50 receives a release instruction or the like during the histogram display and starts exposure control for photographing, in step S200, the system control unit 50 determines whether exposure correction is being performed. If the result of this determination is that exposure correction is not in progress, the system control unit 50 proceeds to step S201, reads out the stored photometric calculation result described in step S106 in FIG. 2, and proceeds to step S207. Proceed.

  On the other hand, if the result of determination in step S200 is that exposure correction is in progress, the process proceeds to step S202, and an image obtained from the image sensor 14 is not displayed on the EVF. In addition, the display update of the EVF and the histogram is stopped so that the luminance change due to the change in the exposure condition of the image sensor 14 is not reflected in the histogram.

  Thereafter, the process proceeds to step S203, and since exposure correction is performed in order to start photometry, an appropriate exposure setting for setting the exposure correction value to “0” is performed, and then the process proceeds to step S204. At this time, although the exposure conditions of the image sensor 14 change, since the display update of the EVF and the histogram is stopped in step S202, the change in luminance is not recognized by the user.

  Next, the system control unit 50 exposes the image sensor 14 under the exposure condition in which the exposure correction value is “0” in step 204, and reads the image signal from the image sensor 14 following the completion of exposure in step 205. In step 206, the luminance signal of the subject is extracted by the image processing unit 20 to obtain the luminance value, the difference between the obtained luminance value and the luminance value at which the luminance signal of the subject is appropriate is calculated, and the process proceeds to step S207. Proceed.

In step S207, the system control unit 50 converts the luminance difference into an exposure difference, and determines an exposure value for photographing based on the converted exposure difference.
Next, the system control unit 50 shifts the process to step S208 and determines whether exposure correction is being performed. If the result of this determination is that exposure correction is not in progress, the system control unit 50 completes exposure control for shooting.

  On the other hand, if the result of determination in step S208 is that exposure correction is in progress, the system control unit 50 determines the exposure value for shooting by adding the exposure correction value to the exposure value at this time in step S209. Thereafter, in step S210, an image obtained from the image sensor 14 is displayed on the EVF, and a luminance change due to a change in the exposure condition of the image sensor 14 is reflected in the histogram. Thereby, the EVF and histogram display update are resumed, and the exposure control for photographing is completed. The above is the exposure control operation for photographing shown in FIG.

  As described above, according to the present embodiment, in order to avoid exposure control in a portion where the linearity of the output of the image sensor is not maintained with emphasis on the exposure accuracy and the operation response at the time of release, for EVF Even in a digital camera that uses an appropriate exposure value without adding an exposure correction value to the exposure value, an exposure correction value for determining the exposure value at the time of shooting while checking the EVF histogram display Can be adjusted accurately.

  In addition, in order to perform an operation for setting an exposure correction value while referring to the histogram, a certain degree of knowledge about exposure of the digital camera is required. Therefore, the exposure control operation described above is limited to the case where the photographing mode of the digital camera is an aperture value (Av) priority, a shutter speed (Tv) priority, a predetermined program diagram (program), or the like. Therefore, it is possible to make the operability of the digital camera easier to understand.

(Another embodiment according to the present invention)
Each unit constituting the imaging apparatus and each step of the imaging apparatus control method in the embodiment of the present invention described above can be realized by operating a program stored in a RAM or ROM of a computer. This program and a computer-readable recording medium on which the program is recorded are included in the present invention.

  In addition, the present invention can be implemented as a system, apparatus, method, program, storage medium, or the like, and can be applied to a system composed of a plurality of devices. Moreover, you may apply to the apparatus which consists of one apparatus.

  In the present invention, a software program (in the embodiment, a program corresponding to the flowcharts shown in FIGS. 2 and 3) for realizing the functions of the above-described embodiments is directly or remotely supplied to the system or apparatus. And the case where the computer of the system or apparatus also achieves by reading and executing the supplied program code.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, and the like.

  As a recording medium for supplying the program, for example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card ROM, DVD (DVD-ROM, DVD-R) and the like.

  As another program supply method, a client computer browser is used to connect to an Internet homepage, and the computer program itself of the present invention or a compressed file including an automatic installation function is downloaded from the homepage to a recording medium such as a hard disk. Can also be supplied.

  It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  In addition, the program of the present invention is encrypted, stored in a storage medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS running on the computer based on the instructions of the program is used for the actual processing. The functions of the above-described embodiment can be realized by performing some or all of the processes.

  Furthermore, after the program read from the recording medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion board or The CPU or the like provided in the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows the structure of the imaging device of embodiment which concerns on this invention. It is a flowchart which shows the operation | movement of exposure control for EVF by 1st Embodiment. It is a flowchart which shows the operation | movement of the exposure control for imaging | photography by 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Shooting lens 12 Shutter 14 Image pick-up element 16 A / D conversion part 18 Timing generation part 20 Image processing part 22 Memory control part 24 Image display memory 26 D / A conversion part 28 Image display part 30 Memory 32 Image compression / decompression part 40 Exposure Control unit 42 Distance control unit 44 Zoom control unit 46 Barrier control unit 48 Strobe 50 System control unit 52 Memory 54 Display unit 56 Non-volatile memory 60 Mode dial 62 Shutter switch SW1
64 Shutter switch SW2
66 posture detection unit 70 operation unit 80 power supply control unit 82, 84, 92, 96 connector 86 power supply unit 90, 94 interface 98 recording medium detection unit 100 imaging device 102 protection unit 104 optical finder 110 communication unit 112 connector (antenna)
200, 210 Recording medium 202, 212 Recording unit 204, 214 Interface 206, 216 Connector

Claims (10)

When an exposure compensation value is set, use an appropriate exposure value without exposure compensation for the viewfinder display exposure value, and use an exposure value with exposure compensation added to the appropriate exposure value for shooting. In the imaging device made in
An operation mode for controlling the first operation mode in which the display showing the luminance distribution is performed on the finder display device and the exposure correction is performed, and the second operation mode in which the display showing the luminance distribution is not performed. Control means;
An operation mode determination means for determining whether the first operation mode or the second operation mode is operating;
As a result of the determination by the operation mode determination means, when operating in the first operation mode, an exposure value obtained by adding exposure correction to an appropriate exposure value is used as an exposure value for viewfinder display, and the second operation An image pickup apparatus comprising: an exposure value selection unit configured to select an appropriate exposure value for which no exposure correction is applied as an exposure value for finder display when operating in a mode. Imaging means for capturing an image of a subject and acquiring image data;
Display means for displaying an image of the subject based on image data acquired by the imaging means;
Photometric means for measuring the luminance of the subject;
Exposure value calculating means for calculating an appropriate exposure value based on a photometric result by the photometric means;
Exposure control means for controlling exposure conditions so as to obtain an appropriate exposure value calculated by the exposure value calculation means;
Luminance value calculating means for calculating the luminance value of the subject based on image data acquired by the imaging means;
Exposure value correction means for correcting the appropriate exposure value calculated by the exposure value calculation means to an arbitrary exposure value,
The display unit displays a display showing the luminance distribution of the subject together with the image of the subject based on the luminance value of the subject calculated by the luminance value calculating unit, and performs a display showing the luminance distribution of the subject. Displays the image of the subject reflecting the correction by the exposure value correcting means, and when the display showing the luminance distribution of the subject is not performed, the correction of the subject to which the correction by the exposure value correcting means is not reflected. An image pickup apparatus that displays an image.   When displaying the luminance distribution of the subject, the display means displays the image of the subject at the exposure value corrected by the exposure value correction means, and does not display the luminance distribution of the subject. 3. The imaging apparatus according to claim 2, wherein an image of a subject at an appropriate exposure value calculated by the exposure value calculation unit is displayed.   In the case where the photometry means measures the brightness of the subject while displaying the image of the subject reflecting the correction by the exposure value correction means on the display means, the exposure that does not reflect the correction by the exposure value correction means The imaging apparatus according to claim 2, wherein the luminance of the subject is measured under conditions.   When the luminance of the subject is measured by the photometric means while displaying the subject image reflecting the correction by the exposure value correcting means, the display means updates the displayed subject image. The imaging apparatus according to claim 4, wherein the imaging apparatus is stopped.   The display means stops the update of the image of the displayed subject, and then calculates the appropriate exposure value by the exposure value calculation means based on the photometric result of the photometric means, and then displays the displayed subject. The image pickup apparatus according to claim 5, wherein updating of the image is started.   When the display unit starts updating the image of the displayed subject that has been stopped, the display unit calculates the exposure value when the update of the image of the displayed subject is stopped. The imaging apparatus according to claim 6, wherein an image of a subject in which correction by the exposure value correction unit is reflected in an appropriate exposure value is displayed.   8. The display device according to claim 5, wherein the display unit stops updating the display indicating the luminance distribution of the subject while the update of the image of the displayed subject is stopped. The imaging device described in 1. When an exposure compensation value is set, use an appropriate exposure value without exposure compensation for the viewfinder display exposure value, and use an exposure value with exposure compensation added to the appropriate exposure value for shooting. In the control method of the imaging device made in
An operation mode for controlling the first operation mode in which the display showing the luminance distribution is performed on the finder display device and the exposure correction is performed, and the second operation mode in which the display showing the luminance distribution is not performed. Control steps;
An operation mode determination step of determining whether the first operation mode or the second operation mode is operating;
As a result of the determination in the operation mode determination step, when operating in the first operation mode, an exposure value obtained by adding exposure correction to an appropriate exposure value is used as an exposure value for finder display, and the second operation An exposure value selection step of selecting an appropriate exposure value without applying exposure correction as an exposure value for finder display when operating in the mode. An imaging apparatus control method comprising: an imaging unit that captures an image of a subject to acquire image data; and a display unit that displays an image of the subject based on the image data acquired by the imaging unit.
A photometric step of measuring the brightness of the subject;
An exposure value calculating step for calculating an appropriate exposure value based on the photometric result in the photometric step;
An exposure control step for controlling the exposure conditions so as to be the appropriate exposure value calculated in the exposure value calculation step;
A luminance value calculating step of calculating the luminance value of the subject based on the image data acquired by the imaging means;
An exposure value correcting step for correcting the appropriate exposure value calculated in the exposure value calculating step to an arbitrary exposure value;
A display step for displaying on the display means together with the image of the subject a display showing the luminance distribution of the subject based on the luminance value of the subject calculated in the luminance value calculating step;
In the display step, when displaying the luminance distribution of the subject on the display means, the image of the subject reflecting the correction in the exposure value correction step is displayed and the luminance distribution of the subject is also displayed. An image pickup apparatus control method, comprising: displaying an image of a subject that does not reflect the correction in the exposure value correction step when the display is not performed.

Images