JP5094561B2 - camera - Google Patents

Description

  The present invention relates to a camera that performs exposure control by calculating exposure values by obtaining luminance information of a plurality of regions selected from image data.

  Multi-spot photometry is known in which a photographing screen is divided into a large number and photometry is performed at a plurality of points corresponding to a plurality of divided areas. Patent Document 1 discloses a camera that performs photometry in a photometry area corresponding to an autofocus (AF) point.

When the camera selects an AF point, the camera displays a luminance value obtained in a photometric area corresponding to the selected AF point. When the AF point is changed, luminance information is obtained in the photometric area corresponding to the AF point after the change, and an average value is further calculated and displayed with the previous luminance information. Patent Document 1 discloses that the camera further displays a bar indicating the distribution of luminance information with respect to the average value of each point.
JP 2000-81647 A

  In the above multi-spot metering, the multi-spot metering area corresponds to the AF point whose position within the shooting angle of view is fixed. Therefore, when the subject that is the target of the multi-spot metering area deviates from the AF point, the subject Cannot be tracked. Therefore, if the subject subsequently moves or the camera orientation is changed, the target area for multi-spot metering will deviate from the intended subject, and luminance information centered on the subject desired by the user is obtained. I couldn't.

  Further, when the AF point is selected, it is conceivable to avoid the above problem by holding the luminance information obtained in the photometric area corresponding to the AF point. However, with such a configuration, it is impossible to cope with a case where the luminance of the subject changes immediately before shooting.

  Further, in the bar display, since the marks indicating the luminance information of the respective multi-spot photometry areas have the same display form, it is not possible to recognize which mark indicates the brightness value of which multi-spot photometry area.

(Object of invention)
An object of the present invention is to set an exposure value based on luminance information in a region where a desired subject is located even when the luminance is changed after the region for obtaining luminance information is selected or when the composition is changed. It is intended to provide a camera that can be calculated and recognized by the user.

In order to achieve the above object, the present invention obtains luminance information in a plurality of regions according to at least one of a face region detected from image data and a region selected according to a user instruction , In a camera having a control means for calculating an exposure value used for exposure control from the luminance information, a subject located in each of the plurality of regions is determined, and when the subject moves, a region where the subject is newly located Tracking means, a display unit for displaying a plurality of luminance information scales indicating luminance information of each of the plurality of regions, and a display unit for displaying an image based on the image data, Table in association with a plurality of be one that displays a frame indicating each region, each of the plurality of luminance information scale a frame indicating each of the plurality of regions Display means for setting the area detected by the tracking means as a newly selected area, and including the brightness information of the newly selected area, the exposure value is set. The camera is recalculated.

  According to the present invention, the exposure value based on the luminance information in the region where the desired subject is located can be obtained even when the luminance is changed after the region for obtaining the luminance information is selected or the composition is changed. It is possible to provide a camera that can be calculated and recognized by the user.

  The best mode for carrying out the present invention is as shown in the following examples.

  FIG. 1 is a block diagram showing an outline of a camera according to an embodiment of the present invention. In FIG. 1, reference numeral 101 denotes a photographing lens. Reference numeral 102 denotes an AF drive circuit unit, which includes, for example, a DC motor or a stepping motor, and adjusts the focus lens position in the photographing lens 101 under the control of the microcomputer 123 to adjust the focus. A zoom drive circuit unit 103 includes, for example, a DC motor and a stepping motor, and changes the focal length by changing the position of the zoom lens in the photographing lens 101 under the control of the microcomputer 123. Reference numeral 104 denotes an aperture, and reference numeral 105 denotes an aperture drive circuit unit that drives the aperture 104. The driving amount of the diaphragm 104 is controlled by the microcomputer 123 to change the optical diaphragm value.

  Reference numeral 106 denotes a mirror for switching the light beam that has passed through the photographing lens 101 between a viewfinder side and an image sensor side described later. The mirror 106 is normally arranged so as to reflect the light beam to the viewfinder, but when shooting, the mirror 106 is flipped up in FIG. 1 to guide the light beam to the image sensor 112. It is done. That is, it is saved from the light flux. The mirror 106 is a half mirror so that a central portion thereof can transmit a part of light, and a part of the light beam is transmitted so as to be guided to a sensor for detecting a focus.

  Reference numeral 107 denotes a sub-mirror that reflects the light beam transmitted from the mirror 106 and reflects it to the AF sensor for focus detection. Reference numeral 108 denotes a pentaprism constituting the finder. In addition, the finder includes a focus plate, an eyepiece lens (not shown), and the like. Reference numeral 109 denotes a focus detection circuit, which is guided to an AF sensor for performing photoelectric conversion in which a light beam transmitted through the center of the mirror 106 and reflected by the sub-mirror 107 is arranged inside. The defocus amount used for the focus calculation is obtained by calculating the outputs of a plurality of AF sensors provided at predetermined positions of the angle of view. The microcomputer 123 communicates with the AF driving circuit 102 after evaluating the calculation result, and drives the focus lens of the photographing lens 101.

  A rear curtain focal plane shutter 110 is driven by a shutter drive circuit 111. The opening time of the shutter is controlled by the microcomputer 123. On the other hand, in order to control the front curtain electronic shutter, the exposure start timing of the image sensor described later is controlled by the microcomputer 123.

  Reference numeral 112 denotes an image sensor, which uses a CCD, a CMOS sensor, or the like. The subject image formed on the image sensor by the photographing lens 101 is photoelectrically converted and taken out as an electric signal. The exposure start timing of the image sensor 112 is controlled by the shutter drive circuit 111.

  A clamp circuit 113 and an AGC (auto gain control) unit 114 perform basic analog signal processing before A / D conversion. The microcomputer 123 changes the clamp level and the AGC reference level. Reference numeral 115 denotes an A / D converter that converts an analog AGC output signal into a digital signal.

  Reference numeral 116 denotes a video signal processing circuit, which is generally realized by a logic device such as a gate array. The video signal processing circuit 116 performs filtering processing, color conversion processing, and gamma processing on the digitized image data, performs compression processing such as JPEG, and outputs the result to the memory controller 119. On the other hand, the video signal processing circuit 116 also includes a D / A converter, and converts the video signal input from the image sensor 112 and the image data input reversely from the memory controller 119 into an analog signal. . It is also possible to output to the EVF monitor 118 through the EVF drive circuit 117. Switching between these functions is performed according to instructions from the microcomputer 123. The video signal processing circuit 116 can output information such as exposure information and white balance of the signal from the image sensor 112 to the microcomputer 123 as necessary. Based on the information, the microcomputer 123 instructs white balance and gain adjustment.

  The video signal processing circuit 116 executes face detection processing for detecting a human face from the image data. As a face detection method, a method using learning typified by a neural network and a method of detecting a part having physical shape features such as eyes and nose from an image region by using template matching are proposed. ing. In addition, many methods have been proposed, including a method for detecting image feature quantities such as skin color and eye shape and performing statistical analysis. In general, face recognition is performed by combining a plurality of these methods. Currently proposed products include a face detection method using wavelet transform and image feature amounts, a method combining template matching, and many other face detection methods.

  In the case of the continuous shooting operation, the shooting data is temporarily stored in the buffer memory 122 as an unprocessed image, the unprocessed image data is read through the memory controller 119, and image processing or compression processing is performed by the video signal processing circuit 116. Perform continuous shooting. The number of continuous images taken depends on the size of the buffer memory 122. The memory controller 119 stores unprocessed digital image data input from the video signal processing circuit 116 in the buffer memory 122. Then, the processed digital image is stored in the memory 120. Conversely, image data is output from the buffer memory 122 or the memory 120 to the video signal processing circuit unit 116. The memory 120 may be removable.

  Reference numeral 121 denotes an external interface that can be connected to a computer or the like, and the memory controller 119 can output an image stored in the memory 120 to the external interface 121 that can be connected to a computer or the like.

  An operation state detection unit 124 notifies the microcomputer 123 of the state of the switch connected to the operation state detection unit 124, and the microcomputer 123 controls each unit according to the change in state. 125 is a switch for photographing preparation (hereinafter referred to as switch SW1), and 126 is a switch for release (hereinafter referred to as switch SW2). The switches SW1 and SW2 are switches that are turned on and off by operating the release button, and are each one of the switches connected to the operation state detection unit 124. When only the switch SW1 is on, the release button is half-pressed, and the focus position and exposure value at the time of actual photographing are determined based on the brightness of the subject and the AF evaluation value when the switch SW1 is turned on. When both the switches SW1 and SW2 are on, the main photographing is performed at the focal position and the exposure value determined according to the on of the switch SW1, and a still image is recorded. Shooting is performed in this state. Further, the continuous shooting operation is performed while the switches SW1 and SW2 are kept pressed.

  In addition, the operation state detection unit 124 is connected to operation switches (not shown) such as an ISO setting switch, an image size setting switch, an image quality setting switch, and an information display switch, and detects these switch states.

  Reference numeral 127 denotes a liquid crystal driving circuit that drives the external liquid crystal display unit 128 and the in-finder liquid crystal display unit 129 in accordance with a display content command of the microcomputer 123. The in-finder liquid crystal display unit 129 is provided with a backlight such as an LED (not shown), and the LED is also driven by the liquid crystal driving circuit 127.

  The microcomputer 123 confirms the memory capacity through the memory controller 119 based on the predicted value data of the image size according to the ISO sensitivity, image size, and image quality set before shooting, and then the remaining shootable image. Numbers can be calculated. If necessary, the remaining number of shootable images can be displayed on the external liquid crystal display unit 128 and the finder liquid crystal display unit 129.

  Reference numeral 130 denotes a non-volatile memory (EEPROM) that can store data even when the camera is not turned on. A power supply unit 131 supplies power necessary for each IC and drive system. Reference numeral 132 denotes a live view setting button for switching the live view mode on and off. When the live view mode is set, the mirror 106 and the sub mirror 107 are retracted from the optical path, and the image data generated by the image sensor 112 is displayed on the EVF monitor (electronic viewfinder) 118 as a moving image. Thereby, the state of the subject can be observed in real time on the EVF monitor 118.

  Reference numeral 133 denotes a multi-spot metering button for setting a multi-spot metering mode in which exposure control is performed using only luminance information obtained from a selected area.

  A touch pen 134 is used to select an area to be subjected to multi-spot metering when the multi-spot metering mode is set. In the present embodiment, the photometric area is divided into a number of areas in advance, and the EVF monitor 118 is equipped with a sensitive sensor, and any area touched by the touch pen 134 is set as a target area for multi-spot photometry. The size of each region may be the same as that of known spot photometry. Instead of the touch pen 134, the configuration may be such that the target area for multi-spot photometry is set around the position where the user of this camera directly touches with a finger.

  FIG. 2 is a view showing the back of the camera having the above configuration.

  On the right side of the EVF monitor 118, a live view setting button 132 and a multi-spot metering button 133 are arranged. Of course, these positional relationships can be designed freely. When the live view setting button 132 is turned on, a live view mode is set in which a captured image is captured in real time on the EVF monitor 118 on the back of the camera. When the multi-spot metering button 133 is pressed in the live view mode, the multi-spot metering mode is set. In this embodiment, when this multi-spot photometry mode is set, the video signal processing circuit 116 starts face detection processing, detects a face part from the subject image, and registers it as a multi-spot photometry area.

  Next, the operation when the multi-spot metering mode is set with the multi-spot metering button 133 will be described using the flowchart of FIG. In this embodiment, a count value is assigned to each of a plurality of subjects that are targets of multi-spot photometry. If the same subject is continuously detected, the same count value is assigned to the subject, and if a new subject is designated, a new count value is assigned.

In steps S102 to S106, which will be described later, a count value is assigned to a face detected from image data using the face detection process described above. In steps S107 to S111, a count value is assigned to the subject specified with the touch pen. In steps S112 to S114, display control and exposure control in multi-spot photometry are executed for all the subjects detected in steps S102 to S111.
In FIG. 3, when the live view setting button 132 is set to the live view mode and the multi-spot metering button 133 is pressed, the multi-spot metering mode is set. Then, the microcomputer 123 first sets the count value to the initial value 0 in step S101. This count value is a value indicating the number of detected faces (persons). In the next step S102, the video signal processing circuit 116 is caused to perform face detection processing by the method described above using the acquired image data.

  In the next step S103, the microcomputer 123 selects one face from the faces detected by the video signal processing circuit 116 in the above step S102, and whether or not this selected face is a new face. Determine. As a result, if the first face (person) is detected, it is determined that a new face has been detected, and the process proceeds to step S104. If no face is detected, the process immediately proceeds to step S106.

  Here, whether the detected face is a new face can be determined, for example, by comparing the position and size of the already detected face and the newly detected face on the screen and within a predetermined range. For example, it may be determined that the face is the same person as the face that has already been detected. Alternatively, a feature value obtained by converting the detected face shape into a numerical value is calculated, and a new face and a feature value of a face that has already been detected are compared. If these differences are within a threshold value, the feature has already been detected. It may be determined that the person is the same person as the face.

  If it is determined in step S103 that a new face has been detected, the process proceeds to step S104, and the microcomputer 123 increases the count value by one. In the next step S105, the count value obtained in step S104 is stored in association with the area determined as a new face in step S103. Then, using the center position of these face areas as a reference, an area surrounded by a circle having a predetermined radius is set as a multi-spot photometry area, and the coordinates thereof are stored. In subsequent step S106, since there may be a plurality of faces detected in step S102, it is determined whether or not the processes in steps S103 to S105 have been performed for all the faces. If the processes in steps S103 to S105 are not performed for all the faces, the processes in steps S103 to S105 are repeated until the processes are completed for all the faces.

  Through the above processing, count values are assigned to all detected faces. If the detected face is a face that has already been detected in the previous frame, the process proceeds directly from step S103 to step S106, and the count value is held without being updated. If the detected face is the face detected for the first time, the process proceeds from step S103 to step S104, and a new count value is assigned.

  Thereafter, when it is determined that the processing has been completed for all the faces, the process proceeds to step S107, and the microcomputer 123 detects whether or not a new selection area has been designated (input) by the user with the touch pen 134. This is because even a face region in which face detection has failed or a subject other than the face can be added as a subject to be subjected to multi-spot photometry by using the touch pen 134.

  Then, in the next step S108, it is determined whether or not a new selection area is designated with the touch pen 134. If a new selection area is not designated, the process immediately proceeds to step S111, and a new selection area is designated. If so, the process proceeds to step S109.

  When the process proceeds from step S108 to step S109 assuming that a new selection area has been designated, the microcomputer 123 increases the count value by one. In the next step S110, the count value obtained in step S109 is stored in association with the area determined as the new selection area in step S108. Then, using the center position of these selected areas as a reference, an area surrounded by a circle having a predetermined radius is set as a multi-spot photometric area, and its coordinates are stored.

  In the next step S111, the microcomputer 123 causes the video signal processing circuit 116 to perform moving object tracking. This is a process for the following two purposes. First, when a face that could be detected in the previous cycle exists within the angle of view, but has failed to be detected for some reason in this cycle, this is remedied. Because. The other is to determine whether the subject newly selected with the touch pen 134 is the same subject as the subject specified in the previous cycle. Note that the face area and the selection area that have already been detected in the previous cycle are hereinafter referred to as a past face area and a past selection area.

  Here, the moving object tracking will be described in detail. First, the feature amount is obtained by quantifying the contrast information, shape information, color information, region size, etc. in each past face region and past selected region. Similar to step S103, the same feature amount is obtained from the remaining areas excluding the area determined to be the face already detected in step S103 in the latest image data newly acquired. Detect areas. When an area occupied by the same subject as the past face area and the past selection area is found, that is, when the subject can be tracked, the photometry area superimposed on the center position of the area is selected as the multi-spot photometry area. Then, the same count value as the corresponding past face area and past selection area is assigned. According to this method, even if the face area detected in the previous cycle is lost in the face detection in the previous step S102, it may be detected again in this step S111.

  As described above, a new count value is assigned to the face area and the selected area that are newly detected in step S105 and step S110. On the other hand, the face area determined to be the same person as the face already detected in step S103, the past face area detected in step S111, and the area occupied by the same subject as the past selected area include a new one. Count values are not allocated. In other words, the same count value is assigned to the same subject as long as it is not lost, and a new count value is assigned to a newly detected subject.

  After moving body tracking, the process proceeds to step S112, where the multi-spot photometry area detected in the immediately preceding steps S102 to S110 and the multi-spot photometry area detected in step S111 are added to obtain the multi-spot photometry in the latest image data. Determine the area.

  In this way, if there are newly detected face areas or selected areas, these areas are newly added as multi-spot photometric areas. On the other hand, if there are face areas or selected areas that have been detected from the past image data but have been lost from the new image data, these areas are excluded from the multi-spot photometry area. In other words, if the subject set in the multi-spot metering area moves outside the shooting angle of view, the subject will be excluded from the multi-spot metering target, and any subject that has entered the shooting angle of view will be included. For example, the subject is set as an object for multi-spot photometry.

  In the next step S113, for each multi-spot photometry area integrated in step S112, a frame display indicating the multi-spot photometry area is superimposed on the subject image and displayed on the EVF monitor 118.

  Here, the screen of the EVF monitor 118 displaying the multi-spot photometry area will be described with reference to FIG. Using the image data generated by the image sensor 112, on the right side of the screen for displaying the subject image in real time, as shown in FIG. 4, the luminance display for displaying the luminance information of each multi-spot photometric area in a bar scale An area is provided.

In FIG. 4A, reference numerals 301 to 305 denote different brightness information scales of the respective multi-spot photometry areas. In this example, it is assumed that the brightness information scale 301 is blue, the brightness information scale 302 is red, the brightness information scale 303 is green, the brightness information scale 304 is light blue, and the brightness information scale 305 is pink. Reference numeral 306 denotes an average value scale indicating the average value of the brightness of the multi-spot photometry area obtained by the following equation (1) of the brightness information indicated in the brightness information scales 301 to 305 (step S114).

  The exposure value is calculated using the luminance information indicated by the average value scale 306, and exposure control is performed (step S115).

  In FIG. 4A, reference numerals 401 to 405 denote frame displays indicating multi-spot photometric areas, which correspond to the luminance information scales 301 to 305, respectively. That is, the frame display 401 is blue, and this region indicated by a circle indicates that the luminance information is indicated by the blue luminance information scale 301. Similarly, the frame display 402 is red, and this area indicates the luminance information indicated by the red luminance information scale 302. Similarly, the frame display 403 is green, and this area indicates the luminance information indicated by the green luminance information scale 303. Similarly, the frame display 404 is light blue, and this area indicates the luminance information indicated by the lightness luminance information scale 304. Similarly, the frame display 405 is pink, and this area indicates the luminance information indicated by the pink luminance information scale 305.

  Specifically, the color as described above is assigned to each count value assigned to each multi-spot photometry area. The frame displays 401 to 405 of the multi-spot photometric area and the luminance information scales 301 to 305 are displayed in the assigned colors. Thereby, the user can grasp at a glance which frame display is which luminance information. Further, by comparing each of the luminance information scales 301 to 305 and the average value scale 306, it becomes possible to grasp the exposure value of the subject in each multi-spot photometric area at the time of actual photographing.

  When the user changes the direction of the camera, as shown in FIG. 4B, when a change occurs in the subject located within the shooting angle of view, the luminance information scale 304, which has lost the corresponding subject from within the shooting angle of view, 305 and the frame displays 404 and 405 are deleted. Then, the luminance information indicated by the average value scale 306 is obtained from the luminance information indicated by the remaining luminance information scales 301 to 303, and the exposure value is calculated. The same process is performed even when the subject that is the target of the multi-spot photometry area moves by itself and moves out of the shooting angle of view.

  If it is determined in step S103 that the face once out of the shooting angle of view has returned to the shooting angle of view again, the same count value as before before falling out of the shooting angle of view is assigned, and the luminance information The scale and frame display may be displayed in the same color as before the shooting angle of view is removed.

  Further, the example has been described in which the brightness information scale and the frame display color are distinguished according to the count value. However, the count value may be displayed in the vicinity of each brightness information scale and the frame display. Absent. As long as the correspondence relationship between each luminance information scale and the frame display can be grasped, the display form is not limited to these.

  Further, although an example in which a selection area is designated with the touch pen 134 has been described, the selection area may be designated by using a button provided on the camera body instead of the touch pen.

  As described above, according to the present embodiment, since it has a function to track the subject selected as the multi-spot photometry area, it is possible to compose freely even after selecting the subject to be the target of the multi-spot photometry area. Can be changed. That is, even when the luminance changes after the multi-spot photometric area is selected or when the composition is changed, the luminance information can be updated in real time, and luminance information consistent with the EVF display can be provided. Furthermore, by making it possible to select a multi-spot photometry area using an operation member such as the touch pen 134, luminance information desired by the user can be obtained through an intuitive operation.

  In addition, even when the subject that is the target of the multi-spot photometry area moves, the tracking is automatically performed as described above, so that the burden on the user is reduced. That is, by automatically selecting a region where a face is detected on the EVF display and performing multi-spot photometry calculation, it is possible to obtain luminance information desired by the user without forcing the user to perform complicated operations. In other words, the camera side recognizes the subject, tracks the multi-spot photometry area, and performs the multi-spot photometry calculation again, so that the user does not have to be aware of the re-measurement by the composition change.

  Furthermore, since subjects outside the shooting angle of view are automatically excluded from the target of the multi-spot metering area, even if the subject existing within the shooting angle of view changes, the user can select the multi-spot metering area. Saves you the trouble of reselecting.

  Further, the luminance information for each multi-spot photometric area is displayed in a form (changing the color, display mark, number, etc. on the screen) so that the correspondence between them is clear. Therefore, it is possible to make the user easily recognize the general determination of which subject is captured with what luminance information (exposure value) at a glance.

  In the present embodiment, an example having a face detection function has been described, but the face detection function is not necessarily required. The above-described effects can be obtained even with a camera that does not have a face detection function but has a moving object tracking function. That is, in the present embodiment, various known methods can be applied to the tracking method itself as long as it has a function of tracking the subject selected as the multi-spot photometry area.

(Correspondence between the present invention and the embodiment)
The microcomputer 123 and the video signal processing circuit 116 correspond to control means for obtaining luminance information in a plurality of regions selected from the image data and calculating an exposure value used for exposure control from the luminance information. Similarly, the microcomputer 123 and the video signal processing circuit 116 discriminate a subject located in each of a plurality of areas according to the present invention, and when the subject moves, the microcomputer 123 and the video signal processing circuit 116 correspond to tracking means for detecting a newly located area. To do. The video signal processing circuit 116 corresponds to a face detection unit that detects a face area on image data according to the present invention. The touch pen 134 corresponds to the operation member of the present invention. Further, the EVF driving circuit 117 and the EVF monitor 118 correspond to display means for displaying the luminance information of each of the plurality of areas in a form that can identify which area each luminance information corresponds to. .

  In addition, when the tracking unit of the present invention fails to detect the area corresponding to the new position of the subject, the microcomputer 123 calculates the luminance information and the exposure value excluding the area where the detection has failed. It corresponds to. Further, the control means calculates an exposure value based on the luminance information in the face area detected by the face detection means in addition to the luminance information in the plurality of selection areas selected by the operation means.

It is a block diagram which shows schematic structure of the camera which concerns on one Example of this invention. It is a rear view which shows the camera which concerns on one Example of this invention. It is a flowchart which shows operation | movement when the multi spot photometry mode of the camera which concerns on one Example of this invention is set. It is a figure for demonstrating the screen of the EVF monitor which displayed the multi spot photometry area | region of the camera which concerns on one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Shooting lens 102 AF (autofocus) drive circuit part 103 Zoom drive circuit part 109 Focus detection circuit 112 Image pick-up element 116 Image signal processing circuit 117 EVF drive circuit 118 EVF monitor 119 Memory controller 120 Memory 121 External interface 122 Buffer memory 123 Microcomputer 124 Operation state detection unit 127 Liquid crystal drive circuit 132 Live view setting button 133 Multi-spot metering button 134 Touch pen

Claims (3)

Obtain brightness information in multiple areas according to at least one of the face area detected from the image data and the area selected according to the user's instruction, and calculate the exposure value used for exposure control from the brightness information In a camera having control means for
Tracking means for determining a subject located in each of the plurality of regions and detecting a region where the subject is newly located when the subject has moved;
A display unit for displaying a plurality of brightness information scales indicating brightness information of each of the plurality of regions, and a display unit for displaying an image based on the image data, and each of the plurality of regions on the image data be one that displays a frame indicating the, a display means for displaying at identifiable form whether each of the luminance information graduations corresponds to which frame,
The control means sets the area detected by the tracking means as a newly selected area, and recalculates the exposure value including luminance information of the newly selected area. Camera.   The control means calculates the luminance information and the exposure value excluding the area where the detection has failed when the tracking means fails to detect the area corresponding to the new position of the subject. The camera according to claim 1. The camera according to claim 1 , wherein the display unit further displays a luminance information scale indicating an average value of luminance information of each of the plurality of regions .

Images