JP2011129993A - Imaging apparatus and control method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform exposure control for operating brightness inside an area specified by a user to be in a desired range quickly. <P>SOLUTION: A position to suppress an overexposure in an object image displayed in a display means is specified. The area of a predetermined size centering on the specified position is set as an object area for suppressing the overexposure. Photometry is carried out inside the set area, control is performed such that the maximum value of luminance within the object area obtained by the photometry, the luminance value of pixels of a predetermined ratio from the cumulative luminance high order or a photometric value corresponding to the ratio of the pixels of the predetermined luminance or higher luminance among the pixels within the object area becomes equal to or lower than a threshold, and the exposure control of the entire object image is performed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an imaging apparatus having a function of performing exposure correction based on information on a designated area and a control method thereof.

  In general, some imaging apparatuses have a function of acquiring an exposure value of an area designated by a user and performing overall exposure correction so that the designated area has optimum brightness. Also, a conventional imaging apparatus has been proposed that has a highlight reference metering mode and has a function of performing exposure correction using a selected region as a reference on the overexposure side (see, for example, Patent Document 1). ).

JP 2001-177758 A

  However, in the conventional image pickup apparatus as described above, for example, when it is desired to perform exposure correction to suppress overexposure, which is a phenomenon in which a subject with a certain brightness or more is painted white in a highlight portion, the following is performed. Such a problem may occur. For example, when exposure correction is performed in the highlight reference metering mode, if the part that is whiteout and the part that does not exist are mixed in the selected area, the average brightness value in the area is the exposure correction. Therefore, whiteout may not be suppressed.

  In addition, in an imaging device that performs exposure control using hardware such as an aperture in feedback control, exposure is corrected when it is determined that the highlight portion is appropriate as a highlight when correction is performed in a brighter direction. Control is stopped. In such an image pickup apparatus, there is a problem that the exposure control is stopped in a state in which the highlight portion is overexposed, because extra correction is performed due to a time lag until the exposure control is stopped.

  Therefore, in such an imaging apparatus, a method of slowing down the control speed when approaching an appropriate value as a highlight can be considered, but according to this method, it takes time to become appropriate as a highlight. There's a problem.

  An object of the present invention is to perform exposure control so that brightness within an area designated by a user falls within a desired range quickly.

  In order to achieve the above object, an imaging apparatus according to the present invention includes an imaging unit that images a subject, a display unit that displays a subject image captured by the imaging unit, a photometric unit that measures the luminance of the subject, A setting unit that sets a predetermined range in the subject image displayed on the display unit as a target region that is set to a high brightness that does not white out, and a photometric result of the target region acquired by the photometric unit becomes a target value. Exposure control means for performing exposure control so as to approach, the exposure control means, when the photometry result is smaller than the target value when the photometry result is brought close to the target value, the photometry result is After performing exposure control so that the exposure becomes bright until the target value is exceeded, the exposure control is performed so that the exposure becomes dark until the photometric result becomes the target value or less. That.

  In order to achieve the above object, an imaging apparatus according to the present invention includes an imaging unit that images a subject, a display unit that displays a subject image captured by the imaging unit, and a photometric unit that measures the luminance of the subject. Setting means for setting a predetermined range in the subject image displayed on the display means as a target area for reducing the luminance so as not to be crushed black; and a photometric result of the target area acquired by the photometric means is a target Exposure control means for performing exposure control so as to approach a value, and the exposure control means, when the photometry result is larger than the target value when the photometry result is brought close to the target value, the photometry After performing exposure control so that the exposure becomes dark until the result becomes the target value or less, the exposure control is performed so that the exposure becomes bright until the photometric result becomes the target value or more. And butterflies.

  In order to achieve the above object, a method for controlling an imaging apparatus according to the present invention includes: an imaging unit that images a subject; a display unit that displays a subject image captured by the imaging unit; and a luminance measurement of the subject. A setting step of setting a predetermined range in the subject image displayed on the display unit as a target region that is set to a high brightness that does not cause whitening, An exposure control step for performing exposure control so that the photometric result of the target area acquired by the photometric means approaches a target value, and the exposure control step, when bringing the photometric result close to the target value, When the photometry result is smaller than the target value, exposure control is performed so that the exposure becomes bright until the photometry result is equal to or greater than the target value, and then the photometry result is the eye value. And performing exposure control so exposed to a value less dark.

  In order to achieve the above object, a method for controlling an imaging apparatus according to the present invention includes: an imaging unit that images a subject; a display unit that displays a subject image captured by the imaging unit; and a luminance measurement of the subject. A setting step of setting a predetermined range in the subject image displayed on the display means as a target area to be a low luminance that is not crushed black; and An exposure control step for performing exposure control so that the photometric result of the target area acquired by the photometric means approaches a target value, and the exposure control step, when bringing the photometric result close to the target value, When the photometric result is larger than the target value, exposure control is performed so that the exposure becomes dark until the photometric result is equal to or less than the target value, and then the photometric result is the target value. And performing exposure control so exposed becomes brighter until the above.

  According to the present invention, exposure control can be performed so that the brightness of the area designated by the user falls within a desired range quickly.

1 is a block diagram illustrating a configuration of an imaging apparatus according to a first embodiment of the present invention. It is a flowchart which shows the procedure of the process of exposure control in connection with 1st Embodiment of this invention. It is explanatory drawing which shows the exposure control range in connection with 2nd Embodiment of this invention. It is a flowchart which shows the procedure of the process in connection with 3rd Embodiment of this invention.

<First embodiment>
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

  In the block diagram of the imaging apparatus in FIG. 1, reference numeral 101 denotes an imaging unit. The imaging unit 101 includes a lens including an aperture mechanism, an imaging device, an A / D converter, and the like. The digital video signal obtained by the imaging unit 101 is output to the camera signal processing unit 102.

  The camera signal processing unit 102 performs image processing such as luminance signal and color difference signal separation processing, white balance adjustment, gain adjustment, and the like on the obtained digital video signal, and outputs the result to the video signal processing unit 103.

  The video signal processing unit 103 outputs the data generated by performing the encoding process on the digital video signal output from the camera signal processing unit 102 to the display unit 104 and simultaneously outputs the data to the recording / playback processing unit 105. The recording / playback processing unit 105 performs predetermined processing on the generated data, converts it into a form suitable for recording, and records it on the recording medium 106.

  Further, the control unit 107 reads information of each part of the device and controls the operation of each part of the device based on the information. For example, in exposure control executed by the control unit 107, photometry is performed using a digital video signal obtained by the camera signal processing unit, and based on the result, aperture control, image sensor accumulation time control, camera signal processing unit is performed. The gain is controlled at 102.

  In addition, a signal when an arbitrary position is input from the touch panel 108 installed on the display screen of the display unit 104 is converted into coordinate data by the coordinate processing unit 109 and transmitted to the control unit 107.

  In addition, as a means for determining an arbitrary position, a means for detecting a user's line of sight instead of the touch panel 108 and a means for specifying a position by moving a cursor displayed on a line-of-sight input means or a display means are specified. It may be used.

  The control unit 107 that has received the coordinate data from the coordinate processing unit 109 executes control assigned in advance according to the input coordinates. If the user does not need to input coordinate information, the user may input a desired command using the input unit 110 instead of the touch panel 108.

  Next, a procedure for executing exposure control processing in the control unit of the imaging apparatus according to the present embodiment will be described with reference to the flowchart of FIG.

  This imaging apparatus is configured so that an exposure control mode can be selected and designated at the time of shooting. In this imaging apparatus, for example, a highlight mode that suppresses whiteout in a highlight portion of a selected region, a shadow mode that suppresses blackout in a dark portion of a selected region, or a selected region that is appropriately exposed. Either normal mode is selectable. The operation for selecting the exposure control mode may be performed on the touch panel 108 or the input unit 110.

  Here, as an example, an exposure control process when the highlight mode is selected will be described.

  In this imaging apparatus, when the subject image is displayed on the display unit 104 with the highlight mode selected, the exposure control process in the highlight mode is started.

  When the exposure control process in the highlight mode is started, the user uses the touch panel 108 to select a position where whiteout is to be suppressed (step S201).

  The command signal input by the user operating the touch panel 108 is converted into coordinate data by the coordinate processing unit 109 and then transmitted to the control unit 107.

  The control unit 107 sets a predetermined range area centered on the designated coordinates as a target area (step S202). Further, the control unit 107 acquires a luminance value of a predetermined ratio of pixels from the top of the accumulated luminance from the digital video signal in the designated target area (step S203). Note that the photometry result information acquired in step S203 includes the maximum luminance value or the ratio of pixels that are equal to or higher than the predetermined luminance value among the pixels in the target area instead of the luminance value of the predetermined ratio from the top of the accumulated luminance. These photometric results may be used.

  Next, the control unit 107 compares the luminance value acquired in step S203 with a predetermined threshold value (target value) (step S204). Then, the control unit 107 proceeds to step S211 when it is determined to be equal to the predetermined threshold value, and proceeds to step S208 when determined to be larger than the predetermined threshold value, and is determined to be smaller than the predetermined threshold value. If so, the process proceeds to step S205.

  When the control unit 107 proceeds to step S205, the control unit 107 controls the aperture value of the aperture mechanism, the accumulation time of the image sensor, and the gain in the camera signal processing unit 102, thereby performing exposure control in the direction in which the subject image becomes brighter. . Here, the control amount may be a fixed amount, or the control amount may be changed depending on the difference between the luminance value acquired in step S203 and the threshold value in step S204.

  Next, the control unit 107 proceeds to step S206, and acquires a luminance value of a predetermined ratio of pixels from the top of the accumulated luminance from the digital video signal in the designated target area as in step S203 described above.

  Next, the control unit 107 compares the luminance value acquired in step S206 with a predetermined threshold value (step S207), and returns to step S205 when determining that the luminance value is smaller than the predetermined threshold value, and determines that it is equal to or greater than the predetermined threshold value. In this case, the process proceeds to step S208. Here, even when the luminance value acquired in step S206 is equal to the threshold, the process proceeds to step S208 because a time lag occurs between the timing of acquiring the luminance value and the timing of stopping the exposure control. Due to this time lag, it is conceivable that even if the intention is to stop at an appropriate exposure, the exposure will stop at an exposure brighter than the appropriate exposure. In consideration of such a case, the process proceeds to step S208 even when the luminance value is equal to the threshold value. Let

  Next, when it is determined that the luminance value is larger than the threshold value and the process proceeds to step S208, the control unit 107 performs exposure control in the direction in which the subject image becomes dark, which is the reverse of step S205. Here, the control amount may be a fixed amount, or the control amount may be changed according to the difference between the luminance value acquired in step S206 and the threshold value in step S207.

  Next, the control unit 107 acquires the luminance value of a predetermined ratio of pixels from the top of the accumulated luminance from the digital video signal in the designated target area in the same manner as in Steps S203 and S206 described above (Step S209).

  Next, the control unit 107 compares the luminance value acquired in step S209 with a predetermined threshold value (step S210), and returns to step S208 when determining that the luminance value is larger than the predetermined threshold value. In addition, when the control unit 107 determines that the luminance value is equal to or less than the predetermined threshold value, the control unit 107 proceeds to step S211.

  Next, after the exposure control is completed, the control unit 107 fixes the current exposure state (step S211), and ends the exposure control process.

  As described above, in the exposure control process when the highlight mode is selected, when the subject image is displayed on the display screen of the display unit 104 for shooting, the user uses the touch panel 108 to skip overexposure. Enter the part you want to suppress.

  Then, the control unit 107 sets an area in a predetermined range centered on a location designated by the user as a target area that is set to a high brightness that does not cause whiteout. Further, the control unit 107 performs photometry in the set target region, and compares the luminance value of a predetermined ratio of pixels from the upper luminance level and the threshold value (target value), which is a photometric result. Then, when the brightness value is close to the threshold value, the control unit 107 determines an appropriate exposure to suppress overexposure by an operation of changing the exposure value in the darkening direction when the brightness value is larger than the threshold value. Fix to this proper exposure.

  In addition, when the luminance value is smaller than the threshold value as a result of comparing the luminance value with the threshold value, the control unit 107 first changes the exposure value in a direction to brighten until the luminance value becomes equal to or higher than the threshold value (above the target value). .

  Thereafter, the control unit 107 determines an appropriate exposure to suppress overexposure by an operation of changing the exposure in the direction of darkening until the luminance value becomes equal to or less than the threshold value (less than the target value). Fix it.

  In the exposure control process when the highlight mode described above is selected, the luminance value of the target area including the portion specified by the user to suppress overexposure is used as the luminance value of a predetermined ratio of pixels from the upper luminance level. Yes.

  As a result, in the exposure control process when the highlight mode is selected, the brightness is the highest in the target area specified by the user, even if the part that is whiteout and the part that is not in the target area are mixed. It means that the metering is high. In this exposure control process, the maximum value of luminance can be used.

  Therefore, in the exposure control process when the highlight mode is selected, exposure correction is performed so that the portion with the highest luminance is not over-exposed, so that over-exposure occurs at other locations in the target area designated by the user. This can be suppressed more reliably.

  In other words, when exposure compensation is performed in the conventional highlight reference metering mode, the average of the metering values in this area is calculated in a state where the whiteout and dark parts are mixed in the selected area. Compared with the case where it is used for exposure correction, whiteout can be more reliably suppressed.

  Next, in the exposure control processing when this highlight mode is selected, when performing the exposure control processing, the operation for making the exposure appropriate is always performed by the operation for changing the exposure in the darkening direction. Will be executed.

  Furthermore, in the operation for making this exposure appropriate, when the operation is stopped at a position that matches the appropriate exposure during the operation that changes the exposure in the direction of darkening, it overruns from the position that matches the appropriate exposure. May stop at different positions. Even in such a case, in the present embodiment, appropriate exposure or exposure that is slightly darker than appropriate exposure is obtained. Thus, when shooting is performed in a state where the exposure is appropriate or the exposure is slightly dark from the appropriate exposure, the shooting is performed in a state where whiteout is suppressed.

  On the other hand, when adjusting to the correct exposure by changing the exposure in the direction of increasing the brightness, if you stop at a position that has overrun from the position that matches the appropriate exposure and overrun, the exposure will be slightly brighter than the appropriate exposure. I will shoot in this state. In this case, since the exposure at the time of shooting is brighter than the appropriate exposure, whiteout cannot be suppressed.

  As can be understood from this, in the exposure control process when the above-described highlight mode is selected, it is possible to more reliably suppress the whiteout of the highlight portion of the selected area.

  Furthermore, in this exposure control process, even if an error from proper exposure occurs due to a deviation in exposure control, an error occurs in the direction in which the subject image becomes darker, thus preventing whiteout due to a deviation in exposure control. It becomes possible. In this exposure control process, the user can adjust the exposure after the exposure is fixed, so that the exposure state desired by the user can be realized.

  Although not shown in the drawings, the image capturing apparatus according to this embodiment described above is configured as follows when black crushing is suppressed. In this imaging apparatus, the user operates the touch panel 108 installed on the display screen of the display unit 104 to input and specify a position where blackout is to be suppressed.

  Then, the control unit 107 sets a region in a predetermined range centered on the designated coordinates as a target region for reducing the luminance so as not to be blackened. Further, the control unit 107 acquires the luminance value of a predetermined ratio of pixels from the lower cumulative luminance in the designated target area from the digital video signals output from the imaging unit 101 and the video signal processing unit 103.

  Then, the control unit 107 corresponds to the minimum luminance value, the luminance value of a predetermined ratio of pixels from the lower cumulative luminance, or the ratio of pixels that are equal to or lower than the predetermined luminance value among the pixels in the target area, which is a photometric result. Get the luminance value.

  Next, the control unit 107 controls the obtained luminance value so as to approach the threshold value (target value), thereby performing overall exposure control of the subject image.

  In addition, when the luminance value is larger than the threshold value, the control unit 107 first changes the exposure value to darken until the luminance value is equal to or less than the threshold value (below the target value). Thereafter, the control unit 107 changes the exposure in the direction of increasing the brightness until the luminance value becomes equal to or greater than the threshold value (greater than or equal to the target value), thereby more reliably suppressing black crushing.

  Since the configuration, operation, and effects other than those described above in the configuration for suppressing blackout are the same as those in the above-described configuration for suppressing whiteout, the description thereof is omitted.

<Second Embodiment>
Next, a second embodiment of the present invention will be described with reference to FIG.

  In the second embodiment, the exposure control is performed again after the exposure is fixed by the exposure control process when the highlight mode described in the first embodiment is selected or after the exposure adjustment is performed after the exposure is fixed. This is related to exposure control when the above process is executed. That is, this imaging apparatus is configured such that the exposure can be adjusted by the operation of the user (user) after the exposure is fixed by the exposure control.

  In the exposure control in this case, when a predetermined input operation instructing release of exposure fixation is executed from the touch panel 108 or the input unit 110 after the exposure fixing control process is completed when the highlight mode is selected. Release the exposure lock. Further, in the exposure control operation to be executed next, the exposure control range is limited so as not to become brighter than the exposure value fixed in the previous exposure control, and the exposure control is executed again.

  As shown in FIG. 3, in normal exposure control, exposure is automatically performed in accordance with the brightness of the subject within a range 306 from a dark exposure state (301) to a bright exposure state (305). Control is performed.

  Accordingly, it is assumed that, for example, the exposure is fixed at the control position of the exposure state 304 as a result of the exposure control process when the highlight mode described in the first embodiment is selected. In this state, when a predetermined input operation for starting the exposure control process is performed by the touch panel 108 or the input unit 110, the control unit 107 releases the fixation of the exposure.

  Next, in the subsequent exposure control, the control unit 107 sets a condition that the upper limit of the exposure control range indicated by the range 307 becomes the control position of the exposure state 304. Then, the control unit 107 automatically performs exposure control according to the brightness of the subject within the range indicated by the range 307 in accordance with this condition. That is, after the exposure is first fixed by the exposure control or after the exposure is adjusted after that, when the exposure is released by the user's operation, the fixed exposure is determined in the subsequent automatic exposure control. Let the state be the control limit of exposure control in the direction of brightening the subject.

  By controlling in this way, the control unit 107 can automatically perform exposure control within a range where the highlight portion is not over-exposed. This exposure control can be used as control for suppressing black crushing.

<Third Embodiment>
Next, a third embodiment of the present invention will be described with reference to FIG.

  In the third embodiment, when there is no bright subject in the target area set by the control unit 107 corresponding to the position specified by the user in the exposure control process, the control unit 107 further enlarges the target area. Then, it is related to the case of resetting and executing the exposure control process again.

  That is, in the third embodiment, when the luminance value obtained by the exposure control process is less than a predetermined value, the control unit 107 enlarges the size of the area and resets the target area.

  In the exposure control processing according to the first embodiment described above, the control unit 107 sets the case where, for example, the user touches a highlight portion that is desired to suppress overexposure and touches a slightly shifted portion. In some cases, a bright subject does not exist in the target area. In such a case, when the control unit 107 executes the exposure control process, the exposure is controlled so as to be highlighted, so that the entire screen may become extremely bright.

  Therefore, in the third embodiment, when there is no bright subject in the target area set in step S202 in the exposure control processing according to the first embodiment, the target area is further enlarged and reset. By doing so, the highlight portion is controlled to be included in the target region.

  Hereinafter, the procedure of the exposure control process according to the third embodiment will be described with reference to the flowchart of FIG. Note that the exposure control process shown in FIG. 4 can be used as an alternative process for the above-described steps S201 and S202 of FIG.

  In the exposure control process according to the third embodiment, a position where whiteout is to be suppressed is selected in the same manner as in the first embodiment described above (step S401). Then, the control unit 107 sets a target area of a predetermined size around the designated position (step S402).

  Next, the control unit 107 acquires a ratio of pixels having a luminance value equal to or greater than a predetermined threshold within the set target region (step S403).

  Next, the control unit 107 proceeds to step S203 when it is determined that the ratio of the pixels whose luminance value is equal to or greater than the threshold is equal to or greater than the predetermined ratio (YES in step S404). In addition, when the control unit 107 determines that the ratio of pixels having a luminance value equal to or greater than the threshold value is less than the predetermined ratio (NO in step S404), the control unit 107 proceeds to step S405. Note that, in steps S403 and S404, the determination is based on the ratio of pixels, but the determination may be made using the luminance value of the pixels having a predetermined ratio from the top of the accumulated luminance. At this time, if the luminance value of the pixels with a predetermined ratio from the top is less than the predetermined value, the process proceeds to step S405.

  Next, the control unit 107 resets an area larger than the target area set in step S402 around the position selected in step S401 as a new target area (step S405), and proceeds to step S403. Further, the control unit 107 repeats the operations in steps S403 to S405 until the condition in step S404 is satisfied. However, in consideration of the processing speed, the number of loops may be limited.

  According to the exposure control related to the third embodiment described above, even when the user selects a position that deviates from the highlight portion, the area around the selected position is not subjected to extreme exposure correction. It is possible to easily suppress over-exposure in the highlight portion.

  In the three embodiments described above, a region within a predetermined range centered on the position selected by the user is set as the target region. However, the selected position may not be the center of the target region. . For example, when the position selected by the user is around the edge of the imaging screen, an area having a narrow range in the end direction and a wide range in the opposite direction from the selected position may be set as the target area.

  In addition, the control unit 107 may set the target area instead of setting the target area based on the position selected by the user, for example, by the user operating the touch panel 108 so as to surround a predetermined range.

<Other configuration examples>
The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed.

DESCRIPTION OF SYMBOLS 101 Image pick-up part 104 Display part 105 Recording / reproducing process part 106 Recording medium 107 Control part 108 Touch panel 109 Coordinate process part 110 Input part

Claims (12)

Imaging means for imaging a subject;
Display means for displaying a subject image captured by the imaging means;
Photometric means for measuring the luminance of the subject;
Setting means for setting a predetermined range in the subject image displayed on the display means as a target area that is set to a high brightness without whiteout;
Exposure control means for performing exposure control so that the photometric result of the target area acquired by the photometric means approaches a target value,
The exposure control means performs exposure control so that when the photometry result is smaller than the target value, the exposure becomes bright until the photometry result is equal to or greater than the target value when the photometry result is brought close to the target value. After performing, exposure control is performed so that exposure becomes dark until the photometric result becomes the target value or less.   When the exposure control means performs exposure control so that exposure is brightened until the photometric result becomes equal to or greater than the target value, the photometric result is equal to the target value when the photometric result is equal to the target value. The image pickup apparatus according to claim 1, wherein exposure control is performed so that the exposure becomes darker after being equal to.   The photometric result is obtained by the photometric means, the maximum value of the luminance value in the target area, the luminance value of a predetermined ratio of pixels from the top of the cumulative luminance of the target area, a predetermined value among the pixels of the target area The imaging apparatus according to claim 1, wherein the imaging apparatus is one of a ratio of pixels having a luminance value or more. Imaging means for imaging a subject;
Display means for displaying a subject image captured by the imaging means;
Photometric means for measuring the luminance of the subject;
Setting means for setting a predetermined range in the subject image displayed on the display means as a target area to be set to a low brightness without being crushed black;
Exposure control means for performing exposure control so that the photometric result of the target area acquired by the photometric means approaches a target value,
The exposure control means, when bringing the photometric result closer to the target value, if the photometric result is larger than the target value, performs exposure control so that the exposure becomes dark until the photometric result becomes equal to or less than the target value. After performing, exposure control is performed so that exposure becomes bright until the photometric result becomes equal to or greater than the target value.   When the exposure control means performs exposure control so that the exposure becomes dark until the photometric result becomes equal to or less than the target value, and the photometric result is equal to the target value, the photometric result is the target value. The image pickup apparatus according to claim 4, wherein exposure control is performed so that the exposure becomes brighter after being equal to.   The photometric result is obtained by the photometric means, the minimum value of the luminance value in the target area, the luminance value of a predetermined percentage of pixels from the lower cumulative luminance of the target area, a predetermined value among the pixels of the target area The imaging apparatus according to claim 4, wherein the imaging apparatus is one of a ratio of pixels having a luminance value or less.   The imaging apparatus according to claim 1, wherein the exposure control unit fixes the exposure after bringing the photometric result close to the target value.   The imaging apparatus according to claim 7, wherein the exposure can be adjusted by a user operation after the exposure is fixed. Having an instruction means for instructing to release the fixation of the exposure;
8. The imaging according to claim 7, wherein the exposure control means performs exposure control using the fixed exposure as a control limit in the exposure control after releasing the fixation of the exposure according to an instruction of the instruction means. apparatus.   The said setting means expands the range of the said target area | region, when the photometry result of the said target area | region obtained by the said photometry means is less than predetermined value, The range of the said target area | region is characterized by the above-mentioned. Imaging device. An imaging apparatus control method comprising: an imaging unit that images a subject; a display unit that displays a subject image captured by the imaging unit; and a photometric unit that measures the luminance of the subject.
A setting step for setting a predetermined range in the subject image displayed on the display means as a target region that is set to a high brightness that does not white out;
An exposure control step for performing exposure control so that a photometric result of the target area acquired by the photometric means approaches a target value,
In the exposure control step, when the photometric result is brought close to the target value, if the photometric result is smaller than the target value, exposure control is performed so that the exposure becomes bright until the photometric result becomes equal to or greater than the target value. After performing, exposure control is performed so that exposure becomes dark until the said photometry result becomes below the said target value, The control method of the imaging device characterized by the above-mentioned. An imaging apparatus control method comprising: an imaging unit that images a subject; a display unit that displays a subject image captured by the imaging unit; and a photometric unit that measures the luminance of the subject.
A setting step of setting a predetermined range in the subject image displayed on the display means as a target region to be a low luminance that is not crushed black;
An exposure control step for performing exposure control so that a photometric result of the target area acquired by the photometric means approaches a target value,
In the exposure control step, when the photometric result is close to the target value, if the photometric result is larger than the target value, exposure control is performed so that the exposure becomes dark until the photometric result becomes equal to or less than the target value. After performing, exposure control is performed so that exposure becomes bright until the said photometry result becomes more than the said target value, The control method of the imaging device characterized by the above-mentioned.