JP2909093B2 - Camera system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera system including a camera and a strobe device mounted on the camera.

BACKGROUND OF THE INVENTION In conventional systems of this type, in many cases the flash dimming level is automatically calculated according to the film speed, the selected aperture and the tuned shutter speed, etc.
It was unique. This produces very good results for some subjects (eg, an 18% gray reflector), but is unsatisfactory for others. For example, it has been a common experience that a white subject does not appear white or a black subject does not appear black. In particular, it was remarkable in photographing with a reversal film in which correction printing was difficult.

In order to solve the above-mentioned drawbacks, there is known a system which can set a correction value indicating a variable amount of a strobe light control level independently of an exposure level determined by ordinary light.

Although this method can certainly reflect the intention of the photographer, it has the following disadvantages.

In other words, the operation is complicated for a user who does not need this, and a failure is caused for a user who cannot understand the meaning of the dimming correction. Also,
For example, when the member for setting the correction value has a structure that is easy to move, there is a possibility that the correction value may be set in a place where the user does not care, such as during portable movement. Further, there is a case where the correction value set at the time of the previous photographing is used, and it is necessary to return the correction value, but the photographing is performed again this time in a state where the correction is forgotten.

(Objects of the Invention) An object of the present invention is to solve the above-mentioned problems, prevent inadvertent settings, and even beginners who do not fully understand the meaning of dimming correction, At ease,
An object of the present invention is to provide a camera system capable of performing appropriate photographing.

(Features of the Invention) In order to achieve the above object, the present invention relates to a camera system including a camera and a strobe device mounted on the camera, a light amount control unit for controlling a light amount emitted from the strobe device, Correction value setting means for setting a correction value by manual operation, correction means for shifting the amount of emitted light controlled by the light amount control means according to the correction value set by the correction value setting means, Mode setting means for setting a mode, and prohibition of correcting the amount of emitted light based on a correction value manually set in the correction value setting means when the shooting mode set by the mode setting means is a fully automatic mode. And means are provided.

More specifically, the light amount control means receives a light beam corresponding to the reflected light of the light beam emitted from the strobe device by the subject in a light receiving circuit, and an integrated value of an output of the light receiving circuit is compared with a reference value. The light amount is controlled by stopping light emission when the value of the predetermined relationship is reached, and the correction unit changes the value of the predetermined relationship according to the correction value set by the correction value setting unit, The prohibiting means cancels the correction value set in the correction value setting means.

FIG. 1 is a block diagram showing an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a strobe device, which is a microcomputer
2, a setting unit 3 for setting a correction value representing a variable amount of a strobe light control level, a display unit 4 for displaying the correction value, a charge detection circuit 5,
A trigger circuit 6 and a dimming circuit 7 are provided. Reference numeral 11 denotes a camera body, which is a microcomputer 12, a photometry circuit 13, an integration circuit 14, and a D / A converter.
15, a comparison circuit 16, a setting unit 17 for setting a shooting mode such as a fully automatic mode, and a display unit 18 constituted by, for example, an LCD for displaying information such as the shooting mode. The strobe device 1
The camera body 11 transmits and receives signals via terminals SI, SO, C, TRI, and STOP.

The port C of the microcomputer 12 has a terminal C, the port E has a terminal TRI, the port D has a D / A converter 15, the port F has an integrating circuit 14, the port G has a display section 18, The setting unit 17 is connected to the port H.

The trigger circuit 6 and the dimming circuit 7 are the same as those used in a conventional flash circuit. The charge completion detection circuit 5 monitors the voltage of the main capacitor in the strobe device 1, and when the voltage becomes equal to or higher than a predetermined voltage at which the Xe tube can emit light, a charge completion signal is sent to the camera body 11 via the terminal C. Is output.

The setting section 3 has two keys 3a, 3 as shown in FIG.
The amount of correction is controlled by this as described above. The display unit 4 is composed of, for example, an LCD.
Indicates that the step is over.

An SPD is used for a sensor in the photometric circuit 13 as described later, and the circuit has an amplifying function. Light emitted from the strobe device 1 is reflected on the film surface through the lens, and the reflected light is received by the SPD.

The integration circuit 14 starts integration of the voltage V _IN from the photometry circuit 13 at the same time as the START signal is input from the port F of the microcomputer 12, and outputs the voltage IN2.

The comparison circuit 16 compares the voltage IN1 from the D / A converter 15 with the voltage IN2 from the integration circuit 14, and if IN1> IN2, the terminal S
A low-level signal is output to the dimming circuit 7 of the strobe device 1 via the TOP, and a high-level signal serving as a timing signal for stopping the strobe emission if IN1 <IN2.

The D / A converter 15 converts the input digital value D into a voltage (analog voltage) IN1 as described above.

 The operation of the above configuration will be described.

Keys 3a and 3b of setting unit 3 arranged in strobe device 1
The connection relationship between the display unit 4 and the microcomputer 2 (hereinafter referred to as + SW, -SW) is as shown in FIG. 3, and the microcomputer 2 incorporates a program as shown in FIG.

The operation of the program shown in FIG. 4 will be described with reference to the time chart of FIG.

First, in step 1, the correction value S is initialized to "0" and the serial data register RCD is initialized to "0".

In step 2, the data register RC input from the previous serial communication from the camera body 11 via the terminal SO
Determine the contents of D. At this time, since the content of the data register RCD is "0", the flow branches to step 3 (note that the content of the data register RCD is "0" when another shooting mode other than the full automatic mode is selected. Is shown).

In step 3, by reading the contents of port A, + SW
It is determined whether or not is pressed, and if it is pressed, the process proceeds to step 4, and if not, the process proceeds to step 13. In the initial state, since + SW is not pressed, the flow branches to step 13.

In step 13, by reading the contents of port B, -SW
It is determined whether or not is pressed, and if it is pressed, the process proceeds to step 14, and if not, the process proceeds to step 16. Since -SW is not pressed in the initial state, the flow branches to step 16.

In step 16, the value of the correction value S is displayed as "0" on the display unit 4 (see FIG. 6A), and the process proceeds to step 8.

In step 8, after performing other processing not directly related to the present embodiment, the process proceeds to step 2 again.

As described above, this program repeats steps 2 → 3 → 13 → 16 → 8 → 2 while no communication is performed from the camera body 11 and the SW operation of the setting unit 3 is not performed (FIG. 5). Period T0).

When the communication is not performed from the camera body 11 and the + SW operation is performed on the setting unit 3, the program branches to step 4 in step 3.

In step 4, since the value of S is "0" at this time, S <
It is determined that the number is 3, and the process branches to step S5. This "3"
Is the upper limit of the correction value.

In step 5, the value of S is incremented to "1", and the process proceeds to step 6.

In step 6, the value of S is displayed as "+1" on the display unit 4 (see FIG. 6 (b)), and the process proceeds to step 7.

After waiting for a predetermined time (= 0.3 seconds) in step 7,
Proceed to step 8.

In step 8, after performing other processing not directly related to the present embodiment, the process proceeds to step 2 again.

As described above, while the communication from the camera body 11 is not performed, the + SW operation of the setting unit 3 is continuously performed, and the state where the value of S is smaller than “3” continues, the program is executed in steps 2 → 3 → 4 → 5.
→ 6 → 7 → 8 → 2 is repeated, and the value of S is “1” → “2”
→ It changes to "3" (period T1).

When the value of S becomes “3” after the above period T1, it is determined in step 4 that S <3, and the process proceeds to step 16.

In step 16, the value of S is displayed as “+3” on the display unit 4, and the process proceeds to step 8.

After performing other processing not directly related to the present embodiment in step 8, the process proceeds to step 2 again.

Thereafter, no communication is performed from the camera body 11, and the setting unit 3
While the + SW operation is continuously performed, the program repeats steps 2 → 3 → 4 → 16 → 8 → 2 (period T2). During this time, the value of S remains “3” and the display on the display unit 4 remains “+3”.

After the period T2, if no communication is performed from the camera body 11 and no SW operation of the setting unit 3 is performed, the value of S remains "3" similarly (period T3).

When the -SW operation is performed after the period T3, the program branches to step 13 in step 3.

In step 13, by reading the contents of port B, -SW
It is determined whether or not is pressed. At this time, since -SW is pressed, the flow branches to step 14.

In step 14, since the value of S is "3" at this time, S>
It is determined that it is -3, and the flow branches to step 15. This "-
The value “3” is the lower limit of the correction value.

In step 15, the value of S is decremented to "2"
And proceed to step 6.

In step 6, the value of S is displayed as “+2” on the display unit 4, and the process proceeds to step 7.

After waiting for a predetermined time (= 0.3 seconds) in step 7,
Proceed to step 8.

In step 8, after performing other processing not directly related to the present embodiment, the process proceeds to step 2 again.

As described above, while the communication from the camera body 11 is not performed, the −SW operation of the setting unit 3 is continuously performed, and the state in which the value of S is greater than “−3” continues, the program executes the steps 2 → 3 → 13 →
Repeat 14 → 15 → 6 → 7 → 8 → 2, the value of S is “2” →
"1" → "0" → "-1" → "-2" → "-3" (period T4).

When the value of S becomes “−3” after the above period T4, it is determined in step 4 that S> −3, and the process proceeds to step 16.

At step 16, the value of S is displayed as “−3” on the display unit 4, and the process proceeds to step 8.

After performing other processing not directly related to the present embodiment in step 8, the process proceeds to step 2 again.

Thereafter, no communication is performed from the camera body 11, and the setting unit 3
This program repeats steps 2 → 3 → 13 → 14 → 16 → 8 → 2 while the −SW operation of (2) is continued (period T5).
During this time, the value of S remains "3" and the display on the display unit 4 remains "-3".

The operation in a state where communication is performed from the camera body 11 after the period T5 and the fully automatic mode is selected on the camera side will be described.

In step 2, the data register RC input from the last serial communication from the camera body 11 via the terminal SO
Determine the contents of D. At this time, since the content of the data register RCD is "1", the process branches to step 11 (the content of the data register RCD being "1" means the fully automatic mode as the shooting mode of the camera as can be understood from the above. Is selected).

In step 11, "0" is substituted for the correction value S, and the process proceeds to step 12.

In step 12, the display of the display unit 4 is blank (see FIG. 6 (c)), indicating that the strobe light control correction operation is not performed. Thereafter, the process proceeds to step 8.

After performing other processing not directly related to the present embodiment in step 8, the process proceeds to step 2 again.

After the period T5, the program repeats steps 2 → 11 → 12 → 8 → 2 as long as the communication is performed by the camera body 11 and the camera body 11 continues to be in the state where the fully automatic mode is selected, and the + SW, − The setting of the correction value S is prohibited regardless of the operation of the SW.

On the other hand, a program is also incorporated in the microcomputer 12 of the camera body 11. As will be described in detail later, roughly, the microcomputer 12 intermittently sends a serial clock signal to the strobe device 1 via the terminal SC,
The serial data, that is, the correction value S, is received from the strobe device 1 via the SI into the register S in the microcomputer 12. At the same time, it transmits a value SD representing its own shooting mode to the flash device 1 via the terminal SO.

FIG. 7 shows a program of the microcomputer 12, and its operation will be described with reference to FIG.

FIG. 7A shows the main routine of this program. In order to make the description of the operation of the present embodiment easy to understand, the description of the operation in a state where the flash charging is not completed is omitted.

The strobe-treated leaching in step 21 of FIG. 7A will be described in detail with reference to FIG. 7B.

In step 101, the set value M by the setting unit 17 is read from the port H, and the process proceeds to step 102. At this time, the value of M is “0”.

In step 102, the value M is substituted for the serial data register SD, and the process proceeds to step 103. This register SD
(= 0) is transmitted to the flash device 1 via the terminal SO at the next serial communication, and the serial data register RC
Stored in D.

At step 103, the value of M is determined. At this time, since the value of M is "0", the process proceeds to step 104.

In step 104, the correction value S set in the flash device 1 is read by the serial communication described above, and the process proceeds to step 105. Here, S = −1.

In step 105, the aperture and the shutter speed are determined. This processing is not so related to the present embodiment, and is the same as the conventional so-called AF exposure. Next, the routine proceeds to step 106.

In step 106, the flash light control level Q is determined based on the film sensitivity, the aperture value, and the like. Since this processing is not so related to the present embodiment, detailed description is omitted. Next, the routine proceeds to step 107.

In step 107, the light control level Q and the correction value S are added, and the added value is stored in the register D.
Proceed to 8.

At step 108, a digital value D is output from the port D. The value D is converted by the D / A converter 15 into a voltage IN1 which is an analog value, and the process is terminated.

As described above, if the fully automatic mode is not selected in the setting unit 17, the program proceeds to step 21.
→ 101 → 102 → 103 → 104 → 105 → 106 → 107 → 108 → 21 is repeated.

Conversely, a case where the fully automatic mode is set by the operation unit 17 will be described.

In step 101, the set value M by the setting unit 17 is read from the port H, and the process proceeds to step 102. At this time, the value of M is “1”.

In step 102, the value M is substituted for the serial data register SD, and the process proceeds to step 103. This register SD
(= 1) is transmitted to the flash device 1 via the terminal SO in the next serial communication.

At step 103, the value of M is determined. At this time, since the value of M is "1", the process proceeds to step 109.

In step 109, the variable S representing the correction value is set to "0".
And the process branches to step 105.

The operations after step 105 are the same as those in the case of the non-full automatic mode, and the description thereof will be omitted.

As described above, when the fully automatic mode is selected in the setting unit 17, the program executes the steps 21 → 101 → 102 → 103
→ 109 → 105 → 106 → 107 → 108 → 21 is repeated.

On the other hand, when the release button is pressed, an interruption is performed. This starts processing from step 31 in FIG. 7 (c).

In step 31, the routine B is processed. This is a process for directly starting exposure on the film surface, such as opening of a shutter curtain or a mirror up, which is not directly related to the present embodiment, and a detailed description thereof will be omitted. . Thereafter, the process proceeds to step 32.

In step 32, the integration circuit is input from the port F of the microcomputer 12.
It outputs a START signal for resetting the integration value of 14 and starting integration. As a result, the integration circuit 14 starts integration again (time t _{0 in} FIGS. 8A and 8B).

Thereafter, the process immediately proceeds to step 33, where a trigger signal is transmitted from the port E via the terminal TRI.

The strobe device 1 receiving this trigger signal starts emitting light (time t ₁ ).

At this time, the reflection mirror 101 in the camera body 11 is flipped upward as shown in FIGS. 9 (a) → (b),
The strobe light from the strobe device 1 hits the film surface 102 and is received by the SPD 103 in the photometry circuit 13. The SPD1
The output voltage (photometric value) V _IN of 03 is sent to the integration circuit 14,
Here, the integration is started.

The comparison circuit 16 compares the input voltage IN1 with the voltage IN2 from the D / A converter 15, and when IN1 <IN2, outputs a high-level signal to the strobe device 1 via the terminal STOP (timing of strobe emission stop). Signal).

Upon receiving a high-level signal from the terminal STOP, the strobe device 1 immediately stops emitting light (time t ₂ ).

Thereafter, step 22 of the main routine of FIG.
Resets the integrated value (time t ₃ ).

Since the digital value D is different depending on the value of the correction value S, the voltage IN1 which is the D / A conversion value is also different. However, when the correction value is S = 0 and when S = 1, the comparison is shown. FIG. 8 (a) and FIG. 8 (b).

In the first embodiment, the setting unit for the flash light control correction value is provided on the flash device side, but the same purpose can be achieved even on the camera body side. This will be described below as a second embodiment.

The general configuration of the second embodiment is almost the same as that of FIG. 1 except that the setting and display of the correction value are performed by the setting unit 17 and the display unit 18 of the camera body 11 (accordingly. These are also provided with the configuration as shown in FIG. 2), and the program (FIG. 7) incorporated in the microcomputer 12 is as shown in FIG. Therefore, in this embodiment, description will be made using the same reference numerals as in FIG.

The operation will be described in accordance with the program shown in FIG.

FIG. 10A shows the main routine of the program.

The flash processing leaching in step 41 of FIG. 10 (a) will be described in detail with reference to FIG. 10 (b).

In step 201, the set value M of the setting unit 17 is read from the port H, and the process proceeds to step 202. At this initial stage, the value of M is “0”.

In step 202, the value M is substituted for the serial data register SD, and the process proceeds to step 203. This register SD
(= 0) is transmitted to the flash device 1 via the terminal SO in the next serial communication.

At step 203, the value of M is determined. At this time, since the value of M is "0", the process proceeds to step 204.

In step 204, by reading the contents of port H, + S
It is determined whether or not W is pressed, and if it is pressed, the process proceeds to step 205, and if not, the process proceeds to step 215. Since + SW is not pressed at this initial stage, the process proceeds to step 215.

At step 215, by reading the contents of port H,
It is determined whether or not W has been pressed. If it has been pressed, the process proceeds to step 216. If it has not been pressed, the process proceeds to step 218. At this time, since -SW is not pressed, step 21
Proceed to 8.

In step 218, the value of S is displayed as "0" on the display unit 18 (see FIG. 6A), and the process proceeds to step 209.

At step 209, the aperture and shutter speed are determined,
Proceed to step 210.

In step 210, the flash light control level Q is determined based on the film sensitivity, the aperture value, and the like, and the flow advances to step 211.

In step 211, the previous dimming level Q and the correction value S are added, and the added value is stored in the register D.
Proceed to 2.

At step 212, the digital value D is output from the port D. The value D is converted by the D / A converter 15 into a voltage IN1 which is an analog value, and the process is terminated.

As described above, if the fully automatic mode is not selected in the setting unit 17 and the SW operation is not performed,
This program is step 201 → 202 → 203 → 204 → 215 → 218
→ 209 → 210 → 211 → 212 is repeated (period T1 in FIG. 11)
0).

If the setting unit 17 does not select the fully automatic mode and considers the + SW operation, the program branches to step 205 in step 204.

In step 205, since the value of the correction value S at this time is “0”, it is determined that S <3, and the flow branches to step 206. This value "3" is the upper limit of the correction value.

At step 206, the value of S is incremented to “1”, and the process proceeds to step 207.

In step 207, the value of S is displayed as "1" on the display unit 18 (see FIG. 6B), and the process proceeds to step 208.

After a standby operation for a predetermined time (= 0.3 seconds) in step 208, the process proceeds to step 209.

From step 209 to step 212, the same operation as described above is performed.

As described above, while the fully automatic mode is not selected in the setting unit 17, while the SW operation is continuously performed and the state in which the value of S is smaller than “3” continues, the program is executed in steps 201 → 202 → 20
3 → 204 → 205 → 206 → 207 → 208 → 209 → 210 → 211 → 212 is repeated (period T11).

When the value of S becomes “3” after the above period T11, it is determined in step 205 that S <3 is not satisfied, and the process proceeds to step 218.

In step 218, the value of S is displayed as "3" on the display unit 18, and the process proceeds to step 209.

From step 209 to step 212, the same operation as described above is performed.

As described above, while the fully automatic mode is not selected in the setting unit 17 and the + SW operation is continuously performed, the program executes the steps 201 to 202 to 203 to 204 to 205 to 218 to 209 to 210 to 211.
→ 212 is repeated, and during this time, the value of S remains “3” and the display remains “+3” (period T12).

After the period T12, if the setting unit 17 is in a state where neither the + SW nor the -SW is operated without the full automatic mode, the process proceeds to S
The value of is unchanged, and the program executes steps 201 → 202 → 20
The sequence of 3 → 204 → 215 → 218 → 209 → 210 → 211 → 212 is repeated (period T13).

When the −SW operation is performed after the period T13, the program branches to step 216 in step 215.

In step 216, since the value of S at this time is “3”, it is determined that S> −3, and the flow branches to step 217. This value “−3” is the lower limit of the correction value.

In step 217, the value of S is decremented to “2”, and the process proceeds to step 207.

In step 207, the value of S is displayed as "2" on the display unit 18, and the process proceeds to step 208.

After a standby operation for a predetermined time (= 0.3 seconds) in step 208, the process proceeds to step 209.

The same operation as described above is performed from step 209 to step 212.

As described above, while the full-automatic mode is not selected in the setting unit 17 and the −SW operation is continuously performed and the state where the value of S is greater than “−3” continues, the program proceeds from step 201 to step 202.
→ 203 → 204 → 215 → 216 → 217 → 207 → 208 → 209 → 210 → 211
→ Repeat 212, the value of S is “2” → “1” → “0” →
"-1" → "-2" → "-3" (period T14).

After the above period T14, when the value of S becomes “−3”, it is determined in step 216 that S> −3 is not satisfied, and step 218 is executed.
Proceed to.

In step 218, the value of S is displayed as "-3" on the display unit 18, and the flow advances to step 209.

The same operation as described above is performed from step 209 to step 212.

As described above, while the fully automatic mode is not selected in the setting unit 17 and while the −SW operation is continuously performed, the program executes the steps 201 → 202 → 203 → 215 → 216 → 218 → 209 → 210 → 211
→ 212 is repeated, during this time, the value of S remains at “−3” and the display remains at “−3” (period T1
Five).

An operation in a state where the setting unit 17 selects the fully automatic mode after the period T15 will be described.

In step 201, the set value M of the operation unit 17 is read from the port H, and the process proceeds to step 202. At this time, the value of M is "1"
It is.

In step 202, the value M is substituted for the serial data register SD, and the process proceeds to step 203. This register SD
(= 1) is transmitted to the flash device 1 via the terminal SO in the next serial communication.

In step 203, the value of M is determined, and the process proceeds to step 213 because the value of M is "1".

At step 213, “0” is substituted for the correction value S, and the routine proceeds to step 214.

At step 214, the display on the display unit 18 becomes blank,
This indicates that the strobe light adjustment correction operation is not performed (see FIG. 6 (c)). Thereafter, the process proceeds to step 209.

Steps 209 to 212 are the same as those described above.

After the period T15, as long as the state in which the fully automatic mode is selected continues, the program proceeds to step 201 → 202 → 203 → 213 →
Repeating 214 → 209 → 210 → 211 → 212, the setting of the correction value S is prohibited regardless of the operation of + SW and −SW (period T1
6).

According to the present embodiment, while having the advanced function of strobe light adjustment, in a situation where a relatively novice uses it, the user cannot understand the function well, causing erroneous operation or giving confusion. In other words, by having you select the fully automatic mode, the dimming correction operation is prohibited,
Since the display of the correction value that is not well understood by the user is prevented from being displayed, the above problem can be solved. Also, +
Since the operation by SW and -SW is not accepted, it is possible to prevent the careless setting from being made while moving.

On the other hand, for a user who wants to enjoy advanced shooting, by setting a shooting mode other than the fully automatic mode, it is possible to sufficiently enjoy shooting with the flash exposure correction operation. .

(Correspondence between the invention and the embodiment) In this embodiment, the photometry circuit 13, the integration circuit 14, the D / A converter 15, the comparison circuit 16, the dimming circuit 7, and the microcomputer 12 have steps 106 to 108 or steps 210 to 212. The part that performs processing is the light amount control means of the present invention, and the key of the setting unit 3 or
3a, 3b and a part of the microcomputer 2 for performing the processing of steps 3 to 5, 13 to 15 or the steps of the microcomputer 12 for steps 204 to 206, 215 to
The part performing the processing of 217 is the correction value setting means of the present invention, the part performing the processing of step 107 or step 211 of the microcomputer 12 is the correcting means of the present invention, the setting unit 17 is the mode setting means of the present invention, The part that performs the processing of Steps 103 and 109 or the part that performs the processing of Steps 203 and 213 corresponds to the prohibiting means of the present invention.

(Effect of the Invention) As described above, according to the present invention, when the photographing mode is the fully automatic mode, the correction of the light emission amount of the strobe device is prohibited, so that careless setting of the light emission amount is performed. This makes it possible to prevent the operation from being performed, so that even a person who is unfamiliar with camera operation can perform strobe shooting with peace of mind.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention, and FIG.
FIG. 1 shows details of the display unit and the setting unit shown in FIG.
FIG. 4 is a diagram showing the connection relationship between the microcomputer in the flash device and its peripheral circuits, FIG. 4 is a flowchart showing the operation of the microcomputer in the flash device, FIG. 5 is a timing chart thereof, and FIG. FIG. 7 is a diagram showing a display state when a correction value is set on a display unit shown in FIG. 7, FIG. 7 is a flowchart showing an operation of a microcomputer in the camera body shown in FIG. 1, and FIG. FIG. 9 is a diagram showing the state of the reflecting mirror when the mirror is up and the mirror is down, and FIG.
FIG. 11 is a flowchart showing the operation of the microcomputer in the camera body in the embodiment of FIG. 11, and FIG. 11 is a timing chart thereof. 1 strobe device, 2 microcomputer, 3 setting unit
4 Display unit 7 Dimming circuit 11 Camera body 12
... microcomputer, 17 setting section, 18 display section.

Claims (2)

(57) [Claims] 1. A camera system comprising a camera and a strobe device mounted on the camera, a light amount control means for controlling the amount of light emitted from the strobe device,
Correction value setting means for setting a correction value by manual operation, correction means for shifting the amount of emitted light controlled by the light amount control means according to the correction value set by the correction value setting means, Mode setting means for setting a mode, and prohibition of correcting the amount of emitted light based on a correction value manually set in the correction value setting means when the shooting mode set by the mode setting means is a fully automatic mode. And a camera system. 2. The light amount control means according to claim 1, wherein a light beam corresponding to the light beam reflected by the subject of the light beam emitted from the strobe device is received by a light receiving circuit, and an integrated value of an output of the light receiving circuit is compared with a reference value. The light amount is controlled by stopping light emission when the value of the predetermined relationship is reached, and the correction unit changes the value of the predetermined relationship according to the correction value set by the correction value setting unit, 2. The camera system according to claim 1, wherein the prohibition unit cancels the correction value set in the correction value setting unit.