JP2856110B2 - Camera system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speedlight that can be mounted on a camera body and shooting information setting of the camera body.

[0002]

2. Description of the Related Art Conventionally, an external speedlight includes a so-called rear curtain sync mode in which a speedlight is emitted immediately before the rear curtain of a shutter travels, and a so-called front curtain sync mode in which a speedlight is emitted immediately after the front curtain of the shutter travels. A switchable setting member was provided.

Further, the external speedlight has a so-called light emission level correction function for enabling a user to arbitrarily correct the light emission level of the speedlight according to the photographing intention, and is provided with a setting member. However, both setting members are not provided on the camera body side. Therefore, as a system of the camera body and the speedlight, both of the setting members are provided only on the external speedlight, and a display member of the setting contents is necessarily provided only on the external speedlight.

[0004]

However, the rear curtain sync, the first curtain sync, and the light emission level correction function as described above can be realized by a control circuit on the camera body side, so that the functions can be switched and set. It is relatively easy to provide a setting member and a display member for displaying the setting contents on the camera body itself.

However, when a camera body having the above-described members and a conventional external speedlight are combined, the same function is set and displayed on both the camera body and the speedlight for the same function. Since there are members and display members, the settings and display contents are
There is a problem that an incompatibility state occurs between the speedlights.

Accordingly, an object of the present invention is to provide a camera system which overcomes this incompatibility state and has consistent settings and display contents.

[0007]

For the above purpose, if the photographing information set in both the camera body and the speedlight is different, a circuit for correcting the information so that they match (FIGS. 3 to 6). (Shown block diagram, flowchart) in the camera body and the speedlight.

[0008]

The photographing information set by both the camera body and the speedlight is transmitted to each other via the information transmitting means 6,
If the information transmitted from the camera body and the setting information on the speedlight differ from each other in steps S31 to S61, the setting information on the speedlight matches the information transmitted from the camera body in step S62. Modify it to Further, by displaying the corrected information on a display unit provided on the speedlight, erroneous recognition is prevented. As described above, in the camera system of the present invention, it is possible to overcome the inconsistency between the setting contents and the display contents of the camera body and the speedlight in speedlight photographing, and to establish consistency.

In the meantime, in order to make the present invention easy to understand, in the means for solving the above-mentioned problems and the action items, the drawings of the embodiments are used, but the present invention is not limited to the embodiments. .

[0010]

1 to 7B show an embodiment of the present invention.
FIG. 1 is a plan view showing a camera body in the camera system of the present invention. On the upper cover 1 of the camera body, a power switch 2 of the camera body, a release button 3, and an LCD as a display member for setting speedlight photographing information.
4. Accessory shoe 5 for mounting an external speedlight, etc., information transmission contact group 6 for transmitting speedlight photographing setting information between the camera body and the speedlight, and setting dial 7 serving as a rotary switch for generating a pulse capable of determining a rotation direction. A camera body side rear curtain sync mode setting button 8 for switching between a rear curtain sync mode and a front curtain sync mode, and a speedlight shooting information setting button 9
There is an exposure mode setting button 10 for other settings,
A film feed mode setting button 11, a slow synchro mode setting button 12, a photometry mode setting button 13, a self-timer setting button 14, and an exposure correction setting button 15 are provided.

FIG. 2 is a diagram showing a display unit and an operation unit of the speedlight. The display unit and operation unit of the speedlight include a display panel 16 for displaying setting contents, a speedlight power switch 17, an emission level correction setting button 18 for enabling the user to arbitrarily correct the emission speed of the speedlight according to a photographing intention, and a rear curtain sync. It comprises a speedlight side rear curtain sync mode setting button 19 for switching between the mode and the front curtain sync mode, and the following display unit (display). Note that the figure shows all display contents for simplicity, and is not a display state in actual use.

The display DISP1 is set to “REAR ▼” by selecting either the rear curtain sync mode or the front curtain sync mode on either the speedlight side or the camera body side.
The display DISP2 turns on or off depending on the presence or absence of the light emission level correction setting.

The display DISP3 is a display section of the light emission level correction amount displayed when the light emission level correction is set.
FIG. 3 is an electric circuit block diagram of the camera system.
The electric circuit shown in FIG. 3 includes a camera body microcomputer 20 provided in the camera body, a dimming control circuit 21, a setting circuit 22, an LCD 23, a trigger line 24 for transmitting a synchro output signal from the camera body to the speedlight, and completion of the speedlight charging. A ready line 25 for transmitting a signal to the camera body, a stop line 26 for transmitting a stop signal from the camera body to the speedlight, a setting information line 27 for transmitting speedlight-related setting information set on the camera body side to the speedlight, and a speedlight are provided. Speedlight side microcomputer 28
And the switches described below.

Trigger line 24, ready line 25,
The stop line 26 and the setting information line 27 are shown in FIG.
In the figure, the microcomputer 20 and the dimming control circuit 21 and the speedlight microcomputer 28 are connected to each other. However, the information transmission contacts 6 on the camera body and the accessory shoe 5 are connected. The function becomes possible by joining the speedlight with the speedlight side information transmission contact group (not shown).

The switch SW1 is linked to the speedlight photographing information setting button 9 and has the following two functions. The first function is to operate the setting dial 7 when the switch SW1 is pressed to set the correction amount of the light emission level.
When the setting dial 7 is rotated when the switch SW1 is pressed, a pulse is generated by the rotary switch, and the pulse is counted by the microcomputer 20 on the camera body side. , +1, +2, -1 and -2 stages. Here, when the light emission level correction value is 0-step, it is considered that the light emission level correction is not set. That is, the light emission level correction is set when the light emission level correction value is other than zero. The light emission level correction function is a function for arbitrarily changing the light emission amount of the speedlight, and is essentially different from the exposure correction function for arbitrarily changing the exposure amount in the camera body. To set the exposure compensation function, set the exposure compensation setting button 15
Set with.

The second function of the switch SW1 is the switch S1.
When used together with the operation of W2, the function of the switch SW2 can be set. The switch SW2 is linked with the rear curtain sync setting button 8 on the camera body side, and the switch SW1
The setting to switch between the rear curtain sync mode and the front curtain sync mode can be made on the camera body side by the combination of
When the switch SW2 is pressed when the switch SW1 is pressed, the rear curtain sync mode and the front curtain sync mode of the camera body are alternately reversed. The switch SW3 is a release switch linked to the release button 3, and starts a release sequence when the release button 3 is pressed.

The switch SW4 is turned on when the shutter first curtain travel is completed by a synchro switch, and is turned off in conjunction with the rear curtain travel. The switches SW5, SW6 and SW7 are the microcomputer 2 on the speedlight side.
8 is connected. The switch SW5 is linked with the speedlight-side emission level correction setting button 18.
A pulse is generated by the signal of the switch SW5 falling to the L level, and the pulse is counted by the microcomputer 28 on the speedlight side.
It is gradually switched to one stage, two stages, -1 stage, and -2 stage. Here, when the light emission level correction value is 0-step, it is considered that the light emission level correction is not set. That is, the light emission level correction is set when the light emission level correction value is other than zero. Since the counter forms a ring counter, the set selection value is a rotary type.

The switch SW6 is interlocked with the speedlight side rear curtain sync mode setting button 19. When the switch SW6 is pressed, the rear curtain sync mode and the front curtain sync mode on the speedlight side are alternately reversed. Switch S
W7 is linked with the power switch button 17 on the speedlight side.

Next, a description will be given of signal transmission and reception until the speedlight emission. When the switch SW7 of the speedlight is turned on, the power of the speedlight is turned on, a speedlight power-on signal is transmitted through the ready line 25, and the camera body recognizes that the speedlight is in the power-on state. Sync switch SW4
Is turned on, a synchro output is issued from the camera body to the speedlight via the trigger line 24 to start flashing.

A stop signal from the dimming control circuit 21 is transmitted via a stop line 26 to stop flashing. FIG. 4 is a flowchart of a main routine of the microcomputer 20 on the camera body side. In step S11, various parameters in the microcomputer are set according to the setting states of the switches SW1 and SW2 and the setting circuit 22, and the process proceeds to step S13.

In step S12, the subject is measured, and the flow advances to step S13. In step S13, an APEX operation is performed according to the set value information set in step S11 and the luminance information measured in step S12 to obtain a control value, and the process proceeds to step S14. In step S14, display data corresponding to the set value set in step S11 and the control value obtained in step S13 are obtained, and the display data is sent to the display circuit 24 to perform necessary display.

FIG. 5 is a flowchart showing a part of the setting routine of step S11, which relates to setting of information related to the speedlight. In step S31, it is determined whether or not the rear curtain sync mode selection (RE ▼ on) on the camera body side set in step S11 of FIG. 4 is performed, and if it is off, the process proceeds to step S32. If it is on, the process proceeds to step S33.

In step S32, it is determined whether or not the correction of the light emission level of the speedlight has been set on the camera body side. If the setting has been made, the process proceeds to step S35. If not set, the process proceeds to step S34. In step S33, it is determined whether the correction of the light emission level of the speedlight has been set on the camera body side. If the setting has been made, the process proceeds to step S36, and if not, the process proceeds to step S37.

In step S34, the camera body side speedlight photographing setting information is set to the rear curtain sync mode and no speedlight emission level correction, and step S40.
Proceed to. In step S35, the camera body side speedlight shooting setting information is set to the rear curtain sync mode and the speedlight emission level correction is enabled, and the process proceeds to step S38.

In step S36, the camera body side speedlight shooting setting information is set to the first curtain sync mode and the speedlight emission level correction is enabled, and in step S39.
Proceed to. In step S37, the camera body side speedlight shooting setting information is set to the first curtain sync mode and no speedlight emission level correction, and the process proceeds to step S40. The light emission level correction amount set on the camera body side in steps S38 and S39 is read, and the process proceeds to step S40.

In step S40, the speedlight photographing setting information set on the camera body is transferred to the speedlight, and the process returns. FIG. 6 is a flow chart of the speedlight microcomputer 28 regarding the setting of the speedlight function. In step S51, it is determined whether or not the rear curtain sync mode has been selected on the speedlight side by the switch SW5 (SL-RE ▼ ▲ is on). If it is on, the process proceeds to step S52; if it is off, Proceed to step S53.

In step S52, it is determined whether or not the light emission level of the speedlight has been set on the speedlight side.
The process proceeds to step S4, and if there is a setting, the process proceeds to step S55. In step S53, it is determined whether or not the speedlight emission level correction has been set on the speedlight side. If the setting has been made, the process proceeds to step S56, and if not, the process proceeds to step S57.

In step S54, the shooting information on the speedlight side is set to the rear curtain sync mode and the speedlight emission level is not corrected, and the flow advances to step S60. In step S55, the shooting information on the speedlight side is set to the rear curtain sync mode and the speedlight emission level correction is enabled, and the process proceeds to step S58. In step S56, the shooting information on the speedlight side is set to the first curtain sync mode and the speedlight emission level correction is enabled, and the process proceeds to step S59.

In step S57, the photographing information on the speedlight side is set to the first curtain sync mode and the speedlight emission level is not corrected, and the flow advances to step S60. In steps S58 and S59, the light emission level correction amount set on the speedlight side is read, and the process proceeds to step S60. In step S60, the speedlight shooting setting information of the camera body transferred in step S40 is read, and the flow advances to step S61.

In step S61, it is determined whether or not the speedlight shooting setting information set on both the camera body side and the speedlight side match, and if they match, the process returns. If they do not match, in step S62 the setting information on the speedlight side is made to match the setting information set on the camera body side, and at the same time, the display contents on the speedlight side are corrected to the same contents as the camera body side, and the process returns. .

FIG. 7 (a) is a diagram showing the settings specific to the speedlight side before the correction of the speedlight side setting information based on the camera body side setting information. FIG. FIG. 7B is a diagram showing a display state of the speedlight when the same information as the setting information on the camera body is set by transmitting information from the camera body in step S62.
FIG. 8B is a diagram showing a state in which the setting on the speedlight side shown in FIG. 7A is corrected to the setting of the rear curtain sync mode selected on the camera body side and the setting of the emission level correction of + 2EV.

The operation under each condition based on the above configuration will be described. (A) If the speedlight shooting setting information of the camera body and the speedlight match, consistency is ensured. In this case, even if step S61 is reached, the process does not proceed to step S62. No information change is made. (A) If the speedlight shooting setting information of the camera body and the speedlight do not match, the process proceeds to step S62 in step S61, so that the setting information on the speedlight side and the display contents are the same as the setting information set on the camera body side. Modify to the same content.

That is, the camera body and the speedlight
If connection is made via the accessory shoe in a state where different setting information is set, the mismatch information is corrected when each power is turned on, that is, when setting information is exchanged. Also, if you try to modify the setting information after connecting and turning on the power, the setting modification on the camera body will follow the setting modification on the speedlight side,
The setting modification by the operation of the speedlight is not accepted.

[0034]

As described above, according to the present invention, even when each of the camera body and the speedlight has setting means of the same function related to the speedlight, the setting on the speedlight side is set on the camera body side. In order to correct the set contents, the consistency of the set contents and display is ensured,
There is an effect that a completed camera system is realized.

[Brief description of the drawings]

FIG. 1 is a plan view of a camera body according to an embodiment of the present camera system.

FIG. 2 is a partial view of the speedlight showing a display unit and an operation unit of the speedlight according to the embodiment.

FIG. 3 is an electric circuit block diagram of an embodiment of the camera system.

FIG. 4 is a flowchart of a main routine of the microcomputer 20 on the camera body side of the embodiment.

FIG. 5 is a flowchart illustrating setting information transmission of a function related to a speedlight.

FIG. 6 is a flowchart of the speedlight microcomputer 28 regarding setting of the speedlight function.

FIG. 7 includes (a) and (b), where (a) is a partial view of the speedlight showing a display state of the original setting contents of the speedlight before correction, and (b) is a partial view of the camera body. FIG. 4 is a partial view of a speedlight showing a display state of setting contents corrected to the same contents as setting information.

[Description of Signs] 5 Accessory Shoe 6 Information Transfer Contact Group 7 Setting Dial 8 Rear Shutter Sync Mode Setting Button 9 on Camera Body 9 Speedlight Shooting Information Setting Button 16 Display Panel 18 ...... Emission level correction setting button 19 ...... Speedlight side rear curtain sync mode setting button 20 ...... Camera body side microcomputer 21 ...... Dimming control circuit 22 ...... Setting circuit 23 ...... Display circuit 24 ...... Trigger line 25 ...... Ready line 26 Stop line 27 Setting information line 28 Speedlight side microcomputer

Claims (3)

(57) [Claims] 1. A speedlight having speedlight photographing information setting means for selecting and setting photographing information which can be set in advance in speedlight photographing, and the same information as the photographing function which can be set by the speedlight photographing setting means. a camera body speed light photographing information setting means can be set by selecting, selecting by said camera body speed light imaging information setting means
A camera body having an information transmission unit capable of transmitting the selected information to the speedlight, wherein the speedlight includes information from the information transmission unit and the speedlight shooting information setting unit. Information correction means for changing the shooting function set by the speedlight shooting information setting means to match the information from the information transmitting means, when the shooting information is different from the shooting information set by
A camera information display unit for displaying the shooting information corrected by the information correcting unit. 2. The camera system according to claim 1, wherein the shooting information is a rear curtain sync mode and a front curtain sync mode. 3. The camera system according to claim 1, wherein the shooting information is a speedlight emission level correction.