JP2021152575A - Light emission control device and light emission control method - Google Patents

Abstract

To prevent an inappropriate target main light emission amount from being set, while preventing the right timing for taking a good photograph from being missed.SOLUTION: A light emission control device comprises: calculation means that, based on a photometric result obtained by causing a light emitting device to perform pre-light emission, calculates a target main light emission amount that is a target light emission amount of the light emitting device during photographing; and control means that, in a light emission mode for permitting light emission of the light emitting device when a charging voltage for causing the light emitting device to emit light is less than a predetermined threshold, before any one photographing of consecutive photographing, fixes the target main light emission amount calculated by the calculation means as a target main light emission amount during the subsequent continuous photographing, based on a photometric result obtained by causing the light emitting device to perform pre-light emission in a state in which the charging voltage for causing the light emitting device to emit light is equal to or more than the predetermined threshold, or a photometric result obtained by causing the light emitting device to preform pre-light emission by a predetermined light emission amount or more.SELECTED DRAWING: Figure 2

Description

The present invention relates to a light emission control device that controls the light emitted to the subject of the image pickup device.

Conventionally, since it takes time to charge the light emitting device (strobe) to store energy for emitting light, even if the photographer tries to take a picture, the strobe does not emit light due to lack of energy, and there is a problem that a photo opportunity is missed. there were.

Therefore, Patent Document 1 discloses a technique for permitting light emission and taking a picture even if the strobe charge is less than a predetermined charge level, based on the release operation of the photographer.

Japanese Unexamined Patent Publication No. 3-77929

However, in the technique disclosed in Patent Document 1, no consideration is given to the influence of automatic dimming control for determining the amount of light emitted.

Generally, in automatic dimming, pre-flash is performed, the reflected light from the subject at the time of pre-flash is measured, and the target main light emission amount is calculated so that the brightness of the subject becomes appropriate. At this time, there may be a difference between the intended pre-emission amount and the actual pre-emission amount if the charge level is lower than the predetermined charge level, and as a result, the target main light emission amount may not be calculated accurately. Therefore, if the target main light emission amount at each shooting of continuous shooting is fixed at the main light emission amount at the time of shooting the first frame, the main light emission will be performed based on the target main light emission amount that is not appropriate for all shootings. There is a risk that it will end up.

Therefore, it is an object of the present invention to be able to suppress the setting of an inappropriate target main light emission amount while suppressing the loss of a shutter chance.

In order to achieve the above object, the light emission control device according to the present invention is a light emission control device that causes the light emitting device to emit light during continuous shooting, and is based on the light measurement result obtained by pre-lighting the light emitting device. A calculation means for calculating the target main light emitting amount, which is the target light emitting amount of the light emitting device at the time of shooting, and permission of the light emitting device to emit light when the charging voltage for causing the light emitting device to emit light is less than a predetermined threshold value. In the light emitting mode, the light emitting device is pre-flashed in a state where the charging voltage for causing the light emitting device to emit light is equal to or higher than the predetermined threshold value before any shooting of continuous shooting. The target main light emission amount calculated by the calculation means based on the light measurement result or the light measurement result obtained by pre-flashing the light emitting device at a predetermined light emission amount or more is set as the target main light emission amount in the subsequent continuous shooting. It is characterized by having a control means for fixing the amount of light emitted.

According to the present invention, it is possible to suppress the setting of an inappropriate target main light emission amount while suppressing the loss of a shutter chance.

The block diagram which shows the structural example of the imaging system which concerns on embodiment of this invention. The figure which shows the control method at the time of performing continuous shooting by the imaging system in 1st Embodiment. The flowchart which shows an example of the operation of strobe photography in 1st Embodiment. The flowchart which shows an example of the operation of strobe photography in 1st Embodiment. The figure which shows the control method at the time of performing continuous shooting by the image pickup system of 2nd Embodiment. The flowchart which shows an example of the operation of strobe photography in 2nd Embodiment.

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

(First Embodiment)
FIG. 1 is a diagram showing a configuration example of an imaging system according to an embodiment of the present invention, in which a camera 100 to which accessories can be attached, a lens unit 200 detachably attached to the camera 100, and attachment / detachment to / from the camera 100. It has a strobe 300 that can be mounted.

In FIG. 1, a lens unit 200 is mounted on the front surface of the camera 100. The camera 100 and the lens unit 200 are electrically connected to each other via a mount contact group 103 provided on each of the camera 100 and the lens unit 200. A strobe 300 is mounted on the upper surface of the camera 100. The camera 100 and the strobe 300, which is a light emitting device, are electrically connected to each other via a strobe contact group 109 provided in each. In the present embodiment, an imaging system in which the lens unit 200 and the strobe 300 can be attached to and detached from the camera 100 will be described, but the camera 100, the lens unit 200, and the strobe 300 may be an integrated imaging device.

First, the configuration of the camera 100 will be described. The camera control unit 101 is a microcomputer that controls the operation of each unit of the camera 100. The image sensor 102 using CMOS, CCD, or the like converts the light from the subject incident through the photographing lens 202 of the lens unit 200 into an electric signal to generate image data, and outputs the image data to the camera control unit 101.

The focal plane shutter 104 is arranged between the image sensor 102 and the photographing lens 202, and operates according to the instruction of the camera control unit 101. The focal plane shutter 104 is composed of two light-shielding members called a front curtain and a rear curtain. The image sensor 102 is exposed when the front curtain travels from the shooting standby state, and the image sensor 102 shields light when the rear curtain travels. Will be done. The shutter method is not limited to the focal plane shutter, and other known methods may be used. Further, instead of the light-shielding member that plays the role of a shutter, a so-called electronic shutter may be used for shutter control by reset scanning of the accumulated charge of the image pickup element 102 or readout scanning of the accumulated charge.

The camera operation unit 105 includes an operation member operated by the user, detects an operation performed by the user via various buttons, switches, dials, connected devices, etc. as the operation member, and signals according to the operation instruction. To the camera control unit 101. For example, the camera operation unit 105 emits a signal when the user presses the release button halfway (hereinafter referred to as SW1 signal) and a signal emitted when the user presses the release button deeply (hereinafter referred to as SW2 signal). Is output to the camera control unit 101.

The camera display unit 106 displays shooting information, a shot image, and the like according to the instructions of the camera control unit 101.

The camera control unit 101 controls the operation of the camera 100 based on the output signal of the camera operation unit 105. When the output signal of the operation unit 105 is the SW1 signal, the image sensor 102 is driven to perform imaging, and the photometric control (AE operation) for measuring the brightness of the subject from the imaging result is repeated. In addition, the shutter speed, aperture value, and imaging sensitivity (ISO sensitivity) used during shooting are determined from the photometric results. Here, the shutter speed, aperture value, and ISO sensitivity used at the time of shooting are collectively referred to as an exposure control value. The determined exposure control value is displayed on the camera display unit 106. When the output signal of the camera operation unit 105 is a SW2 signal, the aperture in the photographing lens 202 is driven, the sensitivity of the image sensor 102 is set to correspond to the desired ISO sensitivity, and the focal plane shutter 104 is controlled to control the image sensor. The 102 is irradiated with light. The camera control unit 101 displays the captured image on the screen of the camera display unit 106 according to the image data acquired from the image pickup element 102, and controls to write the image data to the image storage unit 107.

Next, the configuration of the lens unit 200 will be described. The lens control unit 201 is a microcomputer that controls the operation of each unit of the lens unit 200. The photographing lens 202 is composed of one or more lenses, and forms a subject image on the image pickup element 102. The photographing lens 202 performs, for example, a focus lens that can move in the optical axis direction for focusing control, a zoom lens that can move in the optical axis direction for adjusting the focal distance (shooting angle of view), and image blur correction. Therefore, it includes a correction lens that can move in the direction perpendicular to the optical axis. Further, a diaphragm 203 for adjusting the amount of light is provided in the photographing lens 202.

The lens control unit 201 controls the lens and the aperture 203 included in the photographing lens 202 according to the instruction from the camera control unit 101 via the mount contact group 103.

Next, the configuration of the strobe 300 will be described. The strobe control unit 301 is a microcomputer that controls the operation of each unit of the strobe 300. The strobe control unit 301 can communicate with the camera control unit 101 via the strobe contact group 109, receives a light emission control instruction and camera information from the camera 100, and transmits the strobe information. The light emitting unit 302 is composed of a light emitting optical system including a discharge tube such as an Xe tube, a light emitting circuit, and a Fresnel lens.

The charging unit 305 has a light emitting capacitor and a booster circuit, and uses the power of a battery (not shown) mounted on the camera 100 or the strobe 300 to generate energy for generating illumination light to irradiate the subject. To charge. The charging operation is controlled by the strobe control unit 301. At this time, the strobe control unit 301 detects the voltage charged in the light emitting capacitor and stops the charging operation when the voltage exceeds a predetermined voltage threshold value (charging). completion). Further, the strobe control unit 301 starts the charging operation when the voltage becomes smaller than the predetermined voltage threshold value. The charging voltage and charging completion flag information are transmitted to the camera control unit 101 via the strobe contact group 109.

The strobe operation unit 303 includes an operation member operated by the user, detects an operation performed by the user via various buttons, dials, etc. as the operation member, and sends a signal according to the operation instruction to the strobe control unit 301. send. The strobe display unit 304 displays the menu screen, the set light emission mode, and the like according to the instruction of the strobe control unit 301.

The light emitting unit 302 drives the light emitting circuit according to the instruction of the strobe control unit 301, emits light by discharging the energy charged in the light emitting capacitor to the discharge tube, and irradiates the subject via the light emitting optical system. .. The light emission amount of the light emitting unit 302 is observed by the strobe control unit 301 via the photocurrent detection unit 306, and when a predetermined light emission amount corresponding to the target light emission amount is observed, the light emission is stopped. In the photocurrent detection unit, a light receiving diode, a circuit that integrates the current generated from the light receiving diode and converts it into a voltage, and the like are arranged. The strobe control unit 301 determines whether or not a predetermined amount of light is emitted by comparing the light current or the integrated voltage of the light current with a predetermined threshold value. The configuration for determining whether or not a predetermined amount of light is emitted is not limited to the above example, and other methods may be used. For example, a predetermined irradiation time corresponding to the target light emission amount may be set in advance, and it may be determined whether or not the predetermined irradiation time has elapsed since the photocurrent detection unit 306 detects the start of light emission. .. Further, the target light emission amount may be set by the strobe operation unit 303, or may be acquired by communication from the camera control unit 101 via the strobe contact group 109. The strobe control unit 301 can receive a control signal from the camera control unit 101 via the strobe contact group 109 and cause the light emitting unit 302 to emit light in synchronization with the shooting operation of the camera 100.

Subsequently, the operation of the imaging system in the present embodiment will be described with reference to FIGS. 2, 3, and 4. FIG. 2 is a diagram showing a control method when continuous shooting (hereinafter, also referred to as continuous shooting and continuous shooting) is performed by the imaging system of the present embodiment. The strobe shooting in FIG. 2 represents a shooting in which the strobe 300 is made to emit light in synchronization with the shooting, and the normal shooting is a shooting in which the slobo 300 is not emitted in synchronization with the shooting.

In the imaging system of the present embodiment, as a mode (dimming control mode) for automatically controlling the light emission amount of the strobe 300 during continuous shooting, a dimming mode (first dimming mode) and continuous shooting are performed for each continuous shooting frame. It has a fixed dimming mode (second dimming mode) during shooting. The dimming control mode is set for each frame of continuous shooting. In the dimming mode, dimming is performed for each frame of continuous shooting before shooting, and the target main light emission amount is calculated. As the dimming method, a known method may be used in which the strobe 300 is pre-flashed, an image is taken, the brightness of the subject is measured from the imaged result, and the target main light emission amount is calculated based on the photometric result, and detailed description is omitted. do. The target main light emission amount is the target light emission amount when the strobe 300 is made to emit light in synchronization with shooting, and is called the main light emission amount in order to clarify that it is not the light emission amount at the time of pre-flash. And. On the other hand, in the fixed dimming mode during continuous shooting, the target main light emission amount is fixed by one of the results of one or more dimming executed during continuous shooting, and thereafter, the fixed target main light emission amount is used. Perform strobe control. In FIG. 2, the state before the target main light emission amount is fixed is set to the dimming fixed flag during continuous shooting = FALSE, and the state after the target main light emission amount is fixed is set to the dimming fixed flag during continuous shooting = TRUE. ..

Further, the imaging system of the present embodiment has a light amount priority light emission mode (first light emission mode) and a release priority light emission mode (second light emission mode) as strobe light emission modes. In the light amount priority light emission mode, priority is given to causing the strobe 300 to emit light at the target main light emission amount, and the camera 100 instructs the strobe 300 to emit light only when the charge state of the strobe 300 is equal to or higher than the charge level guaranteed to emit light. I do. That is, if the charging voltage of the strobe 300 is equal to or higher than a predetermined threshold value, light emission is permitted, and if the charging voltage is less than a predetermined threshold value, light emission is not permitted.

In the release priority light emission mode, even if the charging state of the strobe 300 is lower than the charge level guaranteed to emit light, the camera 100 gives priority to the release operation of the photographer and gives a light emission instruction to the strobe 300. That is, light emission is permitted regardless of whether the charging voltage of the strobe 300 is equal to or less than a predetermined threshold value. Therefore, it may not be possible to make the strobe 300 emit light at the target main light emission amount. In addition, when the fixed dimming mode during continuous shooting and the release priority light emission mode are combined, it is appropriate to fix the target main light emission amount as a result of pre-light emission when the charge state of the strobe 300 is less than the charge level guaranteed to emit light. There is a risk that the amount of light emitted will be fixed. This is because if the pre-flash is performed when the state of charge of the strobe 300 is less than the charge level guaranteed to emit light, the pre-flash is not performed at a predetermined amount and the dimming accuracy is lowered. Therefore, in the state before the target main light emission amount is fixed, when the charge state of the strobe 300 is less than the charge level guaranteed to emit light, normal shooting is performed instead of strobe shooting. This operation corresponds to (*) in FIG. 2 (b).

In the present embodiment, whether the dimming control mode during continuous shooting is the dimming mode for each continuous shooting frame or the dimming fixed mode during continuous shooting is set by the camera 100 in the camera control unit 101 as setting information. It is stored in the memory and can be changed by the user operating the camera operation unit 105.

Further, whether the strobe light emission mode is the release priority light emission mode or the light amount priority light emission mode is stored in the memory in the strobe control unit 301 as setting information by the strobe 300, and the user operates the strobe operation unit 303. It can be changed by. Alternatively, the operation information of the user to the camera operation unit 105 may be changed by communicating with the strobe 300.

Subsequently, the flow of control for realizing the control method shown in FIG. 2 will be described with reference to FIGS. 3 and 4. 3 and 4 are flowcharts showing an example of strobe shooting operation using the camera 100 and the strobe 300, which are executed when the power of the camera 100 is turned on.

In step S200, the camera control unit 101 sets the dimming fixed flag during continuous shooting, which is a variable for allocating an area in the memory in the camera control unit 101, to FALSE. When the continuous shooting is interrupted and the process proceeds to step S200, if the dimming fixed flag during continuous shooting is set to TRUE during continuous shooting, the fixed target main light emission amount is released.

In step S201, the camera control unit 101 determines the state of the SW1 signal, proceeds to step S202 when SW1 is on, and performs the process of step S201 again when it is off.

Details of the process in step S202 are shown in FIG. In step S300 of FIG. 4, the camera control unit 101 acquires strobe information from the strobe 300. The information acquired here includes information indicating whether the strobe 300 is set to the release priority emission mode or the light amount priority emission mode, and information indicating the charging state of the strobe 300.

In step S301, the camera control unit 101 determines whether to perform strobe photography or normal photography. When the charge state of the strobe 300 acquired in step S300 is equal to or higher than the charge level guaranteed to emit light, it is determined whether the strobe shooting or normal shooting is performed as shown in FIG. 2A, and the charge state is guaranteed to emit light. If the charge level is lower than the charge level, the determination is made as shown in FIG. 2 (b). The camera control unit 101 sets the strobe shooting flag, which is a variable that secures an area in the memory in the camera control unit 101, to TRUE when it is determined to be strobe shooting, and sets the strobe shooting flag when it is determined to be normal shooting. Set to FALSE. In step S302, if the strobe shooting flag set in step S301 is TRUE, the process proceeds to step S303, and if it is FALSE, the process proceeds to step S304.

In step S303 and step S304, the camera control unit 101 performs an AE operation. The AE operation is a process of calculating the brightness of the subject region from the signal obtained from the image sensor 102 and determining the exposure control value at the time of shooting. The exposure control value is an ISO sensitivity, a shutter speed, and an aperture value. The difference between step S303 and step S304 is whether or not the strobe 300 is supposed to emit light when the exposure control value is determined. In step S303, the camera control unit 101 determines the exposure control value assuming that the strobe 300 emits light.

On the other hand, in step S304, the camera control unit 101 determines the exposure control value assuming that the strobe 300 does not emit light. For example, in step S303, the upper limit of the ISO sensitivity is set lower than the ISO sensitivity determined in step S304 in consideration of the risk of overexposure (saturation of the image sensor 102) of the captured image due to the irradiation light from the strobe 300. .. When the exposure control value is determined as described above, the process proceeds to step S203 shown in FIG.

In step S203, the camera control unit 101 determines the state of the SW2 signal, and when SW2 is turned on, proceeds to step S204. On the other hand, when SW2 is off, the camera control unit 101 proceeds to step S200, and repeats the processes from step S200 to step S202 until SW2 is turned on.

In step S204, the camera control unit 101 proceeds to the process of step S205 if the strobe shooting flag set in step S301 is TRUE, and proceeds to the process of step S212 if it is FALSE.

In step S205, the camera control unit 101 proceeds to the process of step S206 if the strobe shooting flag is TRUE, and proceeds to the process of step S208 if it is FALSE.

In step S206, the camera control unit 101 performs pre-flash control for the strobe 300.

In step S207, the camera control unit 101 calculates the target main light emission amount based on the result of the pre-light emission control in step S206.

In step S208, the camera control unit 101 controls the strobe 300, the image sensor 102, the shutter 104, and the like, causes the strobe 300 to emit main light, and executes an exposure operation.

In step S209, the camera control unit 101 proceeds to the process of step S210 if the dimming control mode during continuous shooting is the dimming fixed mode during continuous shooting, and the process of step S211 if the dimming mode is for each continuous shooting frame. Proceed to.

In step S211 the flowchart shown in FIG. 4 is processed in the same manner as in step S202.

When the strobe shooting flag set in step S301 is FALSE, in step S212, the camera control unit 101 controls the image sensor 102, the shutter 104, and the like to perform an exposure operation without strobe light emission.

As described above, when the fixed dimming mode and the release priority light emission mode are combined during continuous shooting, the target main light emission amount calculated by pre-flashing at a charge level higher than the charge level guaranteed by the strobe 300. Is fixed as the target main light emission amount after continuous shooting. As a result, it is possible to suppress the setting of an inappropriate target main light emission amount while suppressing the loss of a shutter chance.

(Second Embodiment)
In the first embodiment, when the fixed dimming mode and the release priority light emitting mode are combined during continuous shooting, it is confirmed that the charging state of the strobe 300 is equal to or higher than the charging level guaranteed to emit light, and then dimming is performed. Then, the target main light emission amount was fixed.

On the other hand, in the present embodiment, when the fixed dimming mode during continuous shooting and the release priority light emitting mode are combined, dimming is performed even if the charging state of the strobe 300 is lower than the charging level guaranteed to emit light. However, the control to fix the target main light emission amount during continuous shooting with the target main light emission amount calculated by dimming is only when it is confirmed that the pre-light emission amount is equal to or more than the predetermined light emission amount (threshold value or more). implement. Hereinafter, the operation of the imaging system according to the present embodiment will be described with reference to FIGS. 5 and 6. Since the configuration of the imaging system is the same as that of the first embodiment, detailed description thereof will be omitted.

FIG. 5 is a diagram showing a control method when continuous shooting is performed by the imaging system of the present embodiment. The difference from the first embodiment is the part (*) in FIG. 5B, and when the fixed dimming mode and the release priority light emission mode are combined during continuous shooting, the state of charge of the strobe 300 is guaranteed to emit light. Strobe shooting even below the current charging level. However, the control for fixing the target main light emission amount during continuous shooting is performed only when it is confirmed that the pre-light emission amount at the time of dimming for calculating the target main light emission amount is equal to or more than the threshold value.

Subsequently, the flow of control for realizing the control method shown in FIG. 5 will be described with reference to FIG. FIG. 6 is a flowchart showing an example of a strobe shooting operation using the camera 100 and the strobe 300.

Since steps S500 to S512 are subjected to the same processing as steps S200 to S212, the description thereof will be omitted.

In step S520 following step S506, the strobe control unit 301 acquires information on the amount of light emitted actually emitted by pre-emission. The light emission amount information is a voltage obtained by integrating the photocurrent obtained at the time of light emission obtained from the photocurrent detection unit 306. Alternatively, it may be calculated from the voltage difference of the charging unit 305 before and after light emission.

In step S521 following step S521, the camera control unit 101 sets the dimming control mode during continuous shooting to the fixed dimming mode during continuous shooting, and the amount of light actually emitted by the pre-emission acquired in step S520 is equal to or greater than the threshold value. Judge whether or not. Whether or not the amount of light emitted actually emitted by the pre-emission is equal to or greater than the threshold value is determined by using the amount of light emitted information transmitted from the strobe control unit 301. If it is equal to or more than the threshold value, the process proceeds to step S510, and the dimming fixed flag during continuous shooting is set to TRUE. In other cases, the process proceeds to step S511.

As described above, when the fixed dimming mode and the release priority light emitting mode are combined during continuous shooting, dimming is performed even if the charging state of the strobe 300 is lower than the charging level guaranteed to emit light. However, the control for fixing the target main light emission amount during continuous shooting with the target main light emission amount calculated by dimming is performed only when it is confirmed that the pre-light emission amount is equal to or higher than the threshold value. As a result, it is possible to suppress the setting of an inappropriate target main light emission amount while suppressing the loss of a shutter chance.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and modifications can be made within the scope of the gist thereof. For example, in the above two embodiments, a configuration in which a part of the processing executed by the camera control unit 101 is executed by the strobe control unit 301 or a part of the processing executed by the strobe control unit 301 is executed by the camera control unit 101. May be configured to

100 Camera 101 Camera control unit 300 Strobe 301 Strobe control unit 302 Light emitting unit 305 Charging unit 306 Photocurrent detection unit

Claims (7)

It is a light emission control device that makes the light emitting device emit light during continuous shooting.
Based on the photometric result obtained by pre-flashing the light emitting device, a calculation means for calculating the target main light emitting amount, which is the target light emitting amount of the light emitting device at the time of shooting, and a calculation means.
When the charging voltage for making the light emitting device emit light is less than a predetermined threshold value, the light emitting device is made to emit light before any shooting of continuous shooting in the light emitting mode in which the light emitting device is allowed to emit light. A light measurement result obtained by pre-flashing the light emitting device in a state where the charging voltage for causing the light emission is equal to or higher than the predetermined threshold value, or a photometric measurement obtained by pre-light emitting the light emitting device at a predetermined light emitting amount or more. A light emission control device comprising: a control means for fixing the target main light emission amount calculated by the calculation means based on the result as the target main light emission amount at the time of subsequent continuous shooting. The light emission control device according to claim 1, wherein the control means releases the fixed target main light emission amount when continuous shooting is interrupted. When the target main light emission amount calculated by the calculation means is fixed as the target main light emission amount during the subsequent continuous shooting, the control means controls so as not to perform pre-light emission in the subsequent continuous shooting. The light emission control device according to claim 1 or 2. The light emitting device has a first light emitting mode in which light emission of the light emitting device is not permitted when the charging voltage for causing the light emitting device to emit light is less than the predetermined threshold value, and charging for causing the light emitting device to emit light. It has a second light emitting mode that allows the light emitting device to emit light when the voltage is less than the predetermined threshold value.
In the second light emitting mode, the control means is the light emitting device in a state where the charging voltage for causing the light emitting device to emit light is equal to or higher than the predetermined threshold value before any shooting of continuous shooting. The target main light emission amount calculated by the calculation means based on the light measurement result obtained by pre-flashing the light emitting device or the light measurement result obtained by pre-light emitting the light emitting device at the predetermined light emission amount or more. The light emission control device according to any one of claims 1 to 3, wherein the target main light emission amount at the time of continuous shooting is fixed. When the control means is in the second light emitting mode, the light emitting device is in a state where the charging voltage for causing the light emitting device to emit light is less than the predetermined threshold value before any shooting of continuous shooting. The light emission control device according to claim 4, wherein when the pre-flash is made to emit light, the pre-flash is controlled so as to perform the pre-flash in the subsequent continuous shooting. It has a first dimming mode in which the target main light emission amount is not fixed during continuous shooting, and a second dimming mode in which the target main light emission amount is fixed during continuous shooting.
When the control means is in the second light emitting mode and the second dimming mode, the charging voltage for causing the light emitting device to emit light is set to the predetermined threshold value before any shooting of continuous shooting. Calculated by the calculation means based on the light measurement result obtained by pre-flashing the light emitting device in a state of the value or more, or the light measurement result obtained by pre-flashing the light emitting device at the predetermined light emitting amount or more. The light emission control device according to claim 4 or 5, wherein the target main light emission amount is fixed as the target main light emission amount at the time of subsequent continuous shooting. This is a light emission control method that causes the light emitting device to emit light during continuous shooting.
Based on the photometric result obtained by pre-flashing the light emitting device, a calculation step of calculating the target main light emitting amount, which is the target light emitting amount of the light emitting device at the time of shooting, and a calculation step.
When the charging voltage for making the light emitting device emit light is less than a predetermined threshold value, the light emitting device is made to emit light before any shooting of continuous shooting in the light emitting mode in which the light emitting device is allowed to emit light. A light measurement result obtained by pre-flashing the light emitting device in a state where the charging voltage for causing the light emission is equal to or higher than a predetermined threshold value, or a light measurement result obtained by pre-light emitting the light emitting device at a predetermined light emitting amount or more. A light emission control method comprising:, a fixed step of fixing the target main light emission amount calculated in the calculation step based on the above as the target main light emission amount at the time of subsequent continuous shooting.

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