JP2646491B2 - Information display device for camera - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an information display device for a camera that enables continuous shooting while automatically changing an exposure value.

(Background of the Invention) In this type of conventional camera, in order to simplify the setting of the auto bracket, the camera itself performs an operation such as under, proper, over (for example, -0.5, 0, +0.5). Generally, a configuration is generally adopted in which the calculated appropriate value is appropriately assigned to the under side and the over side, and the photographer sets only the number of steps (0.5 steps in the above example). By the way, depending on the shooting situation, if it is desired to assign the exposure compensation to only the under side or only the over side (for example, -1.5, -1.0, -0.5 or +0.5, +1.0, +1.5), There is a case where it is desired to shift the center of the distribution, and such a case can be realized by setting an exposure correction value.

However, since the exposure correction value and the number of steps of the auto bracket are displayed independently on the display section, it is difficult to understand the above-described one-side setting or the center offset setting, and there is a risk that the user may make an unintended setting. Had the nature.

(Object of the Invention) An object of the present invention is to solve the above-mentioned problems, to enable the user to confirm at a glance the exposure correction value information and the information on the number of auto bracket steps corresponding to the set number of times of auto bracket shooting, thereby making a mistake. An object of the present invention is to provide an information display device for a camera that can prevent setting of information.

(Features of the Invention) In order to achieve the above object, the present invention provides an auto bracket photographing function for performing photographing while changing each exposure amount for a plurality of frames by a preset number of steps, and an exposure amount corresponding to a set exposure correction value. In an information display device for a camera having an exposure correction function of performing photographing while changing the position, a plurality of first instruction units arranged at predetermined intervals and provided in correspondence with the first instruction units A display unit having a plurality of second instruction units, and a first instruction unit located at a reference position among the first instruction units during auto bracket photographing in a state where the exposure correction value is not set. In accordance with the preset number of stages of the opposing second indicating portion and the first indicating portion located in the first direction centering on the reference position and in the second direction opposite to the first direction. To the first indicator at the position Display control for setting the second pointing unit in the pointing state to the pointing state, and shifting the second pointing unit by the exposure correction value to the pointing state during auto bracket photographing with the exposure correction value set. Means is provided.

(Embodiment of the Invention) FIG. 1 (a) shows a basic configuration of an embodiment of the present invention, and FIG. 1 (b) shows a flowchart thereof.

When the power is turned on, the control unit 101 first checks the on / off state of the first stroke switch 102 that is interlocked with the pressing operation of the release button. On the other hand, if it is off, then the exposure compensation mode setting unit 103
To check whether the exposure compensation mode is set.
As a result, if the exposure correction mode has been set, the operation shifts to the photometric operation as described above. That is, the photometry unit 104
Is driven to perform a photometric operation, and the proper exposure information at this time is calculated from the obtained photometric information. Next, a plurality of display units 105a arranged in a bar graph shape for displaying both the auto bracket step number information and the exposure correction value information in common, and a position (0) indicating an appropriate exposure amount is opposed to each of the plurality of display units 105a. ) And an indicator 105b having an index portion 105b indicating positions (-1, -2, -3, +1, +2, +3) indicating exposure correction amounts on the under side and over side with respect to the current information are displayed. However, since no information is set at this time, only a display indicating that the exposure correction value information is not provided on the display unit 105, that is, the display of the position of “0” of the index unit 105b is performed. Only the display section 105a is turned on. Next, it is determined again whether or not the exposure correction mode is set, and
In the case of the exposure correction mode, the exposure correction value information is read from the information input unit 106 by an external operation of the photographer, the exposure correction value information set and input is stored in the exposure correction value storage unit 107, and the process returns to the start position. .

Thereafter, the same operation is repeated, and the display unit 105a at the position of the numerical value corresponding to the exposure correction value information set at this time is lit on the display unit 105. Thus, by looking at the display 105, it is possible to easily confirm the state of which exposure correction value information has been set.

Thereafter, when the auto bracket mode is set by the auto bracket mode setting unit 108, the information on the number of the auto bracket steps is read from the information input unit 106 by the photographer's external operation, and the information on the number of the auto bracket steps input and stored is stored in the auto bracket step number. The information is stored in the unit 109, and returns to the start position. In this embodiment, the number of times of auto bracket shooting is set to “3 times” in advance. For example, if “1.0” is set by the photographer, shooting with an exposure amount below “1.0” step is appropriate. Exposure shooting,
It is assumed that shooting is performed three times in total, that is, shooting based on the exposure amount on the “1.0” step over side. Here, the description will be continued on the assumption that exposure correction has not been performed.

Therefore, as described above, the number of auto bracket steps is “1.0”.
Is set, the auto bracket stage number storage unit 10
9 stores the number-of-stages information of “−1.0, 0, +1.0”, and the display 105 displays a display as shown in FIG. 1A. Therefore, by looking at the display at a glance, the photographer knows that the exposure is not corrected, and that three auto bracket shootings of “1.0” step under side, appropriate exposure amount, and “1.0” step over side are performed. Can be.

In addition, the number of auto bracket steps is changed to `` 2.
If “0” is set, the number-of-stages information “−2.0, 0, +2.0” is stored in the auto bracket stage number storage unit 109, and
The display as shown in FIG. 1 (c) will be displayed on the display 105. That is, "2.0"
The display switches to the under side or over side. Also,
At this time, if "+1.0" is set as the exposure correction value, the display changes from FIG. 1C as shown in FIG. 1D, and the display of the position of "+1.0" is changed. As the center, "+
"3.0" and "-1.0" are displayed.

FIG. 6 shows the arrangement of the respective operating members when the camera incorporating the device embodying the embodiment shown in FIG.
FIG. 8 shows the arrangement of the operation members when viewed from above, and FIG. 8 shows the arrangement of the operation members when viewed from the back. 6 to 8, reference numeral 1 denotes a release button, 2 denotes an operation lever for selecting one of a shooting mode of continuous shooting (C) and single shooting (S), 3 denotes an operation lever for selecting a self-timer, 4
Is an exposure mode selection knob for selecting one of the exposure modes of shutter priority (Tv), aperture priority (Av), and manual (M). 5 is shutter time, aperture value, or exposure step number information at the time of auto bracket shooting ( For example, it is used when setting information for every 0.5 step or every step). For example, a so-called electronic dial in which 2-bit conductive patterns and brushes having phases different from each other by 90 degrees are provided, and swM is a switch for setting an aperture value. The switch swM is used in a manual exposure mode.
By pressing the dial 5 and operating the dial 5, the aperture value can be changed. Reference numeral 6 denotes a switch cover of a storage unit 7 that stores switches that are used less frequently, swAEB is an auto bracket switch stored in the storage unit 7, and swME is a multiple shooting switch also stored in the storage unit 7. , SwCOMP is an exposure compensation setting switch. When the exposure compensation value is set, the exposure compensation value can be set or changed by operating the dial 5 while pressing the switch swCOMP.

FIG. 2 shows an electric circuit of a specific example in which a microcomputer COM is used for performing a series of operation control.

The light receiving element SPC receives the reflected light from the subject, and outputs a light receiving signal to a high input impedance operational amplifier OP1 in which a compression diode D1 is connected to a feedback circuit. Operational amplifier O
P1 outputs logarithmically compressed subject luminance information Bv via a resistor R1. The variable resistor VR1 connected to the constant voltage source VG1 outputs film sensitivity information Sv. The operational amplifier OP2 in which the resistor R2 is connected to the feedback circuit calculates and outputs photometric information Ev = (Bv + Sv). The photometric information Ev is converted into a 4-bit digital value by an A / D converter ADC,
Input to COM input ports PG0-PG3.

When the dial 5 is operated, the number corresponding to the number of clicks is counted by the dial interface circuit DIF, and the value is converted into 4-bit information and input to the input ports PH0 to PG3 of the microcomputer COM. . The information in the dial interface circuit DIF is reset when a pulse signal is input from the output port PE3 of the microcomputer COM. Depending on which mode is selected by the exposure mode selection knob 4, a double exposure mode switch swSEL is turned on and off, and 2-bit information corresponding to the selected exposure mode is stored in the microcomputer COM.
Are input to the input ports PP0 and PP1.

When the battery BAT is loaded in the camera, the power supply Vbat is supplied to the microcomputer COM, the decoders TD, AD, FD, CD of the display system, the dial interface circuit DIF, and the like. Further, when the first stroke switch sw1 connected to the input port PA0 is turned on by the first stroke of the release button 1, the potential of the output port PF becomes high level, and the transistor TRb is turned on by the inverter INV and the resistor R3.
at is turned on, and the voltage from the power supply Vbat is supplied as a power supply Vcc to circuits that consume a relatively large amount of power, such as photometric operational amplifiers OP1 and OP2.

Microcomputer COM input ports PA1-12
A second stroke switch sw2 that is turned on by the second stroke of the release button 1, a mirror-up switch swMRUP that is turned off when the mirror is up, and turned on when the mirror is down, a charge completion detection switch swCGE that is turned on when mechanical charging is completed, A film switch swFLM that is turned on each time the feeding of one frame of film is completed, a rear curtain switch swCN2 that is turned on when the rear curtain travel is completed, a self switch swSELF that is turned on when a self-timer is set by the operation lever 3, For example, a switch swCS that is turned on when the continuous shooting mode is selected by the operation lever 5 and turned off when the single shooting mode is selected, the aperture value setting switch swM, and off when the switch lid 6 is closed. , A switch swSE that turns on when opened
T, the multiple shooting switch swME, the auto bracket switch swAEB, and the exposure compensation setting switch swCOMP are connected to each other.

The bases of the transistors TR0 to TR2 are connected to the output ports PE0 to PE2 via the resistors R10 to R12.
TR2 is a first tension magnet MG0, a front curtain magnet MG1 for running the front curtain, and a rear curtain magnet MG2 for running the rear curtain.
Are controlled respectively. The bases of the transistors TR3 to TR5 are connected to the output ports PD, PC and PB via the resistors R13 to R15. The transistor TR3 drives the charge motor MD, and the transistor TR4 drives the rewind motor MC.
The transistor TR5 controls the driving of the winding motor MB for winding the film at a high speed, respectively.

From the output port PTD, the content of the shutter time information register RGTv in the microcomputer COM is output to the decoder TD, which converts the content into a signal for shutter time display, and is composed of a connected liquid crystal etc. Display SE
The signal is output to G1.

A signal of "1" (meaning high level) or "0" (meaning low level) is output from the output ports PFL and PAEB to the decoder AD, and the decoder AD outputs "1" from the output port PFL.
When the signal is input, the signal for blinking the auto bracket mark is output to the display SEG3 composed of a connected liquid crystal or the like. When a signal of “1” is input from the output port PAEB, a signal for displaying an auto bracket mark is output to the display SEG3.

A signal of “1” or “0” is output from the output port PME to the display SEG4 composed of a liquid crystal or the like, and the display SEG4 displays a multiple shooting mark when the signal of “1” is input. .

From the output port PFD, the contents of the aperture value information register RGAv in the microcomputer COM or the contents of the multiplex shooting number register RGME are output to the decoder FD.
Auto bracket step display register RGA from PBD
The contents of the EBD are output to the decoders FD and CD. Also, from the output port PCD, the microcomputer COM
The contents of the exposure compensation value display register RGCOMD in the
Output to CD. The decoder FD outputs signals for numerical display corresponding to the respective contents to a display SEG5 formed of a liquid crystal or the like to be connected, while the decoder CD is formed in a bar-bluff shape formed of a liquid crystal or the like to be connected. A display signal corresponding to each of the above-mentioned contents is output to a display SEG6 having a display in a line.

From the output port PAV, the contents of the aperture value information register RGAv in the microcomputer COM are output to the aperture control drive circuit DAV. The aperture control drive circuit DAV outputs information converted into actual aperture information to a connected drive actuator CAV, for example, a stepping motor, and drives the aperture control to perform appropriate aperture control.

Next, the operation of the microcomputer COM will be described with reference to the flowcharts of FIGS.

When the battery BAT is loaded in the camera and the power supply Vbat is generated, the microcomputer COM starts the operation from the start of the flow shown in FIG.

[Step 1] If only the first stroke of the release button 1 is performed by the photographer, the first stroke switch sw
When the ON signal of 1 is input to the input port PA0, the process proceeds to step 2.

[Step 2] A signal “1” is output from the output port PF, and the transistor TRbat is turned on to supply the power Vcc to each unit. Next, the photometric timer is started. The photometry timer is for keeping the power supply Vcc continuously supplied for a predetermined time from the input of the OFF signal of the first stroke switch sw1, so that even if the photographer releases his hand from the release button 1, the photometry state is maintained. Can be confirmed, and the setting information can be changed with the exposure mode selection knob 4 while watching the display. This configuration can be easily performed by a hardware timer built in the microcomputer COM.

[Step 3] The photometric information Ev converted into a 4-bit digital value by the A / D converter ADC is stored in the internal register RG.
Store in Ev.

[Step 4] Metering information Ev stored in register RGEv
Is added to the exposure correction information of the digital value stored in the register RGCOMD, and the result is stored in the register RGEv as new photometric information Ev including the exposure correction information. The input of the exposure correction information will be described in detail in steps 16 to 18.

[Step 5] It is determined whether or not the shutter priority mode is set based on the input state of the input ports PP0 and PP1. If the shutter priority mode has been set, the process proceeds to step 6.

[Step 6] Dial 5 from the contents of register RGEv
Is subtracted from the contents of the shutter information register RGTv that stores the information set by the above operation, and the result (aperture information Av) is stored in the aperture information register RGAv. It is assumed that the contents of all registers in the microcomputer COM are retained while the battery BAT is loaded. Also batteries
When the BAT is first loaded, it is assumed that a frequently used value, for example, information of 1/125 seconds has been initialized.

[Step 7] The contents of the register RGAEB storing the exposure step number information of the auto bracket are stored in the aperture step number register RGBAv of the aperture. The contents of the shutter bracket stage number register RGBTv are set to zero (0).

[Step 8] The state of the flag FAEB indicating whether or not the auto bracket mode is set is determined. If the auto bracket mode has not been set, the process proceeds to step 9.

[Step 9] The state of the flag FME indicating whether or not the multiple photographing mode is set is determined. If it is determined that the multiple shooting mode has not been set, the process proceeds to step 10.

[Step 10] The flag FsAB indicating whether or not the auto bracket switch swAEB has been operated is reset to 0. A flag Fs indicating whether or not the multiple shooting switch swME has been operated.
Reset ME to 0.

[Step 11] The contents of the aperture information register RGAv are output from the output port PFD, and the contents of the shutter information register RGTv are output from the output port PTD. As a result, the aperture value obtained by the calculation is displayed on the display SEG5, and the set shutter time is displayed on the display SEG1.

[Step 12] The contents of the exposure correction value display register RGCOMPD are output from the output port PCD, and the contents of the auto bracket stage number display register RGAEBD are output from the output port PBD. If the microcomputer COM has just been loaded with the battery BAT, the registers RGAEB, RGCOMPD, RG
AEBD, RGCOMP (for exposure compensation value), and RGAEBN (for auto bracket shooting count) are all initially set to 0, and there is no auto bracket and exposure compensation setting.

The output of the output port PCD and PBD allows the decoder CD
Outputs the information corresponding to the exposure correction value and the value of the auto bracket stage to the display SEG6 for display. Here, the operation of the decoder CD will be described.

FIG. 9 shows the basic mechanism of the decoder CD and the display SEG6. The portion surrounded by the broken line in the figure is the decoder CD, which is constituted by the data conversion unit DEC and the segment drivers DR0 to DR16. The data conversion unit DEC has a data input terminal for receiving data from the output ports PCD and PBD of the microcomputer COM.Here, as an example, data representing the number of exposure compensation steps and data representing the number of auto bracket steps are respectively described in the tenth. The data are represented by binary data as shown in FIGS. 10A and 10B, and five data input terminals C0 to C4 are provided as data input terminals for receiving the exposure correction information from an output port PCD to which the information is output. A total of eight terminals A0 to A2 are provided as data input terminals for receiving the information from the output port PBD to which the information on the number of the auto bracket stage is output. The respective information input to the data input terminals C0 to C4 and A0 to A2 are converted into display data by the data conversion unit DEC, and the display segment drivers DR0 to DR16 are output via the data output terminals D0 to D16. Respectively. Then, the drivers DR0 to DR16 independently drive the respective segments SEG600 to SEG616 in the display SEG6 to perform display. Here, the segment corresponding to the terminal to which "1" is output among the data output terminals D0 to D16, for example, the segment SEG600 if the data output terminal D0 is "1", and the segment if the data output terminal D8 is "1". SEG6 08 lights up. The data converter DEC can be composed of, for example, an AND gate or an OR gate as shown in FIG. 11. As an example of data conversion, C4 = C3 = C2 = C1 = C0 = 0, A2 = A1 = A0
When = 0, the output of only the data output terminal D8 becomes "1", and the outputs of D0 to D7 and D9 to D16 become "0". Also C4 = C
3 = C2 = 1, C1 = C0 = 0 (the number of exposure compensation steps is -0.2), and A2 =
When 1, A1 = A0 = 0 (the number of auto bracket stages is 2.0), three outputs D0, D4, and D8 are "1", and the other outputs are "0".

Returning to the description of the step 12, since it is assumed that there is no setting of the auto bracket mode and no setting of the exposure compensation, "RGAEED = 000" and "RGCOMPD = 00"
000 ", and since this value is output from the output ports PBD and PCD, the data input terminals A2 to A0 and C4 to C0 of the data conversion unit DEC are all" 0 ". In order to set only the output of the data input terminal D8 to "1", the driver DR8 drives the segment SEG608 to turn on and turns off the other segments, and the display SEG6 displays as shown in FIG. 12 (a). You. This is a display indicating that if the shooting is performed as it is, the shooting is performed without exposure correction.

[Step 13] Auto bracket stage number register RGAE
Register B for auto bracket stage number register RGAEBD
Put in. This step is meaningful when auto bracket shooting is being performed, and if auto bracket mode is not set, the contents of each register are "000"
Therefore, this step is not particularly meaningful.

[Step 14] Register for auto bracket shooting count
It is determined whether or not the content of RGAEBN is “3”. Here, the auto bracket mode has not been set and “RGAEBN =
Since it is "0", the process proceeds to step 15.

[Step 15] It is determined whether or not the content of the register RGAEBN is “0”. Here, as described above, "RGAE
Since BN = 0 ”, the process proceeds to step S16. If the content of the register RGAEBN is "2" or "1" during auto bracket shooting, the program proceeds to step 20 without passing through the program for changing the exposure correction value in steps 16 to 19, but this is during the auto bracket shooting. This is because if the exposure correction value is changed, the photographer may be confused (details will be described later).

[Step 16] The level of the input port PA12 is read, and it is determined whether or not the exposure compensation setting switch swCOMP is on. As a result, if it is on, proceed to step 17,
If it is off, go to step 20.

Hereinafter, a case where the exposure compensation setting switch swCOMP is turned on and the process proceeds to step 17 will be described.

[Step 17] Here, an information reading routine accompanying the operation of the dial 5 is executed. Here, a reading routine accompanying the dial operation will be described with reference to FIG.

"Information reading routine" [Step 90] The information input to the input ports PH0 to PH3 is stored in the dial register RGH. At this time, the register RGH stores a numerical value corresponding to the number of clicks on the dial 5 and information indicating whether the numerical value is positive or negative depending on the rotation direction of the dial 5. That is, 4-bit information indicating how many steps to shift up or down from the current information is stored.

[Step 91] A pulse signal is output from the output port PE3. As a result, the value of the dial interface circuit DIF is reset to zero.

[Step 92] Return to the previous step.

 Returning again to the flowchart of FIG.

[Step 18] The value set by the dial operation in the exposure correction value register RGCOMP (the dial register RGH
Is stored in the register RGCOMP again,
A new exposure correction value is set. In this embodiment, the register RGCOMP has a data length of 5 bits and the register RGH has a data length of 4 bits as shown in FIGS. 10 (a) and 10 (b). If a method such as adding "0" to the data to obtain 5-bit data is used, addition can be performed without any problem. The same applies to operations between other registers having different bit lengths.

[Step 19] The contents of the exposure correction value register RGCOMP are stored in the exposure correction value register RGCOMPD, and the program returns to the start.

In step 17 above, it is assumed that the dial register RG
Assuming that the data “0001” is stored in H, “RGCOMP = 00001” is set in step 18 and “RGCOMPD = 0001” is set in step 19. This sets the exposure compensation value +
0.5 has been set (see FIG. 10 (a)), and the program which has returned to the start advances the above steps again to execute the same operation. At step 12, the exposure correction value display register is displayed. When the contents of RGCOMPD are output to the output port PCD, only the data output terminal D9 becomes “1” in the data conversion unit DEC in the decoder CD, and the driver DR9 turns on the segment SEG609. The display is as shown in FIG. 12 (b). That is, an indication that the exposure compensation +0.5 step has been set is displayed.

If the exposure compensation setting switch swCOMP has been turned off in step 16, the process proceeds to step 20 as described above.

[Step 20] A second stroke of the release button 1 is performed, and it is determined whether an ON signal of the second stroke switch sw2 is input to the input port PA1. If it is determined that the ON signal of the second stroke switch sw2 has not been input, the process returns to the start. Also, the first stroke switch sw
While the ON signal of 1 is being input, the routine can obtain calculation information from subject brightness information, film sensitivity information, and setting information, and display these information.

If the aperture priority mode has been set, the process proceeds to step 5 → step 21 → step 22.

[Step 22] Dial 5 from the contents of the register RGEv
Then, the content of the aperture information register RGAv that stores the information set by operating the aperture value setting switch swM is subtracted, and the result is stored in the shutter information register RGTv. Immediately after the battery BAT is loaded, a frequently used value, for example, information of F5.6 is initialized.

[Step 23] The contents of the auto bracket stage number register RGAEB storing the auto bracket stage number information are stored in the shutter bracket stage number register RGBTv.
Also, the contents of the aperture bracket stage number register RGBAv are set to zero.

Thereafter, in the case of the aperture priority mode, the same sequence as in the previous shutter priority mode proceeds, and the aperture value set in step 11 is displayed on the display SEG5, and the shutter time obtained by the calculation is displayed on the display SEG1. Is displayed.

If the manual exposure mode is set, the process proceeds to step 5 → step 21 → step 24.

[Step 24] The content of the register RGTM storing the shutter time information set by the operation of the dial 5 is stored in the shutter information register RGTv. This is because when the auto bracket mode is set in the manual exposure mode, the contents of the register RGTv change every shooting, so
This is because the information set by the operation of the dial 5 must be stored as it is, and the details will be described later.

Thereafter, the same sequence as in the aperture priority mode proceeds, and the aperture value set in step 11 is displayed on the display SEG5,
The set shutter time is displayed on the display unit SEG1.

Next, a description will be given of information setting by a dial operation during the operation of the photometry timer. When the pressing of the release button 1 (first stroke) is stopped during the above-described sequence, an off signal of the first stroke switch sw1 is input, and the program proceeds from step 1 to step 25.

[Step 25] The level of the input port PA12 is read, and it is determined whether or not the exposure compensation setting switch swCOMP is on. If it is turned on as a result, the process proceeds to step 2 and proceeds to the photometry / calculation / display routine described above. That is, according to the present embodiment, even when the exposure compensation setting member is operated, the shutter time and the aperture value based on the photometric value are displayed. On the other hand, if the exposure compensation setting switch swCOMP remains off, the program proceeds to step 26.
To enter an information setting routine by a dial operation during the operation of the photometry timer.

[Step 26] It is determined whether or not the opening operation of the switch cover 6 has been performed based on the state of the switch swSET. Switch lid 6
Is kept closed, an off signal of the switch swSET is input to the input port PA9.

[Step 27] It is determined whether the photometry timer is operating. Here, since it is immediately after the photometry timer is operated in step 2, the process proceeds to step 28.

[Step 28] It is determined whether or not the shutter priority mode is set based on the input state of the input ports PP0 and PP1. If the shutter priority mode is set, the process proceeds to step 29.

[Step 29] Here, an information reading routine accompanying the operation of the dial 5 described above is executed.

[Step 30] The value set by the dial operation (contents of register RGH) and shutter time information (register R
GTv contents) and the shutter information register R again.
Store it in GTv. Further, the contents of the shutter information register RGTv are stored in the register RGTM.

[Step 31] It is determined whether or not a certain code indicating a vibrating motor positioned next to the longest shutter time is stored in the register RGTM. If it is not in the vibration mode, the process jumps to NEXT1, that is, to step 3.

Pressing the release button 1 in this manner (first stroke)
During the operation of the photometry timer after the stop of the operation, the setting information can be changed by operating the dial 5, and thereafter, the routine from step 3 onward is executed, so that the aperture value and the shutter Time indicator SEG1, SEG
5, each can be displayed.

If the aperture priority mode has been set, the process proceeds to step 28 → step 32 → step 33.

[Step 33] Here, similarly to step 29, an information reading routine accompanying the operation of the dial 5 is executed.

[Step 34] The numerical value (contents of the register RGH) set by the dial operation is added to the aperture value information (contents of the register RGAv), and stored again in the aperture information register RGAv. Also, in the case of the aperture priority mode, the process jumps to NEXT1, that is, to step 3, and displays the aperture value and the shutter time in step 11 in the same manner as in the shutter speed priority mode.
G1 and SEG5 can be displayed respectively.

If the manual exposure mode is set, the process proceeds to step 28 → step 32 → step 35.

[Step 35] Determine whether the aperture value setting switch swM is on or off. Since the aperture value setting switch swM is operated in the manual exposure mode and the dial operation is performed, the aperture value can be changed, and the shutter time can be changed by performing only the dial operation. When the switch swM is on, the routine proceeds to the execution of the same routine (step 33) as in the aperture priority mode,
When it is off, the routine proceeds to the same routine (step 29) as in the shutter priority mode.

When a predetermined time elapses after the pressing operation of the release button 1 is stopped, the photometric timer operation ends. Accordingly, the program proceeds from step 27 to step 36.

[Step 36] Output ports PTD, PFL, PAEB, PME, PFD, PB
The outputs of D and PCD are set to “0”, and all the displays of the indicators SEG1 to SEG6 (however, the indicator SEG2 does not exist) are turned off. Further, the output of the output port PF is set to “0”, the transistor TRbat is turned off, and the supply of the power Vcc is stopped.

[Step 37] As in step 10, both the flag FsAB indicating whether the auto bracket switch swAEB has been operated and the flag FsME indicating whether the multiple shooting switch swME has been operated are reset to zero.

Then the program jumps to the start. Therefore,
After the photometry timer ends, the standby mode of step 1 → step 25 → step 26 → step 27 → step 36 → step 37 is repeated.

Next, a case where the auto bracket mode is set will be described. Before that, a case where only the opening operation of the switch lid 6 is performed for the auto bracket mode setting will be described.
When the switch cover 6 is opened, the switch swSE operates in conjunction with it.
T turns on, and this on signal is input to the input port PA9. Then, the program proceeds from step 26 to step 38.

[Step 38] The auto bracket switch swAEB is determined. Since the switch cover 6 has just been opened and the operation of the auto bracket switch swAEB has not been performed, the process proceeds to step 39.

[Step 39] The multiple shooting switch swME is determined.
Similarly, since the operation of the multiple shooting switch swME has not been performed, the process proceeds to step 40.

[Step 40] The flag FsME indicating whether or not the multiple photographing switch swME has been pressed is determined. Battery BAT
Since the flag FsME has been reset to 0 in step 10 in the initial loading state and when the first stroke switch sw1 is on, the process proceeds to step 41.

[Step 41] A flag FsAB indicating whether or not the auto bracket switch swAEB has been pressed is determined. As in the case of step 40, the flag FsAB has been reset to 0 in step 10 here.
Jump to 27.

In this manner, nothing is executed if the switch lid 6 is opened and only the ON signal of the switch swSET is input.

Next, from the state described above, the auto bracket switch swAEB
The following describes a case where the pressing operation is performed once. When the auto bracket switch swAEB is pressed, an ON signal is input to the input port PA11 accordingly. Then, the program proceeds from step 38 to step 42.

[Step 42] It is determined whether or not the content of the register RGTM is in the valve mode. If it is in the valve mode, it returns to the start and does not enter the auto bracket mode. If the valve mode has not been set, the process proceeds to step 43.

[Step 43] The flag FsAB indicating that the auto bracket switch swAEB has been turned on is set to 1, and the flag FsME indicating that the multiple shooting switch swME is turned on is set to 0.
Reset to.

[Step 44] Output ports PTD, PFL, PABR, PME, PFD, PB
The outputs of D and PCD are set to “0”, and all the displays of the indicators SEG1 to SEG6 are turned off. Next, only the output of the output port PAEB is set to “1”, and the auto bracket mark of the display SEG3 is turned on.

[Step 45] The flag FAEB indicating that the auto bracket mode has been set is set to 1.

[Step 46] As in step 29 or step 33,
An information reading routine associated with the operation of the dial 5 is executed. In this case, in step 80, for example, dial 5
If the auto bracket stage number information of “0.5” is set, the number of stages of “−0.5, 0, +0.5” and “1”
Is set, three preset auto bracket shootings in which the exposure is automatically changed by the number of steps of “−1, 0, 1” are performed. Note that "-0.5,0, +
Shooting with the number of steps of 0.5 means that the exposure value is 0.5 steps below the standard exposure value calculated, the standard exposure value, and the exposure value is 0.5 steps over the standard exposure value. It means that shooting is performed continuously by three exposure values.

[Step 47] Register for auto bracket shooting count
It is determined whether the content of RGAEBN is "3" or not, and "RGAEBN = 3"
In the case of, the process proceeds to step 50, and in the case of "RGAEBN # 3", the process proceeds to step.

[Step 48] It is determined whether or not the content of the register RGAEBN is “0”. If “RGAEBN = 0”, the process proceeds to step 50, and if “RGAEBN ≠ 0”, the process proceeds to step 49.

[Step 49] This step is a case where the contents of the register RGAEBN are “2” or “1” according to the above-described steps 47 and 48 (the contents of the register RGAEBN are “0” to “0”).
3 ").

When the value stored in the register RGAEBN is “RGAEBN =
"3" indicates that there is an auto bracket setting, and that no one of the predetermined three auto bracket images has been shot, and "RGAEBN = 2" indicates the first of the predetermined three images. This shows a state in which one image has been captured and two more images have been left. When "RGAEBN = 1", two of the three predetermined images have been shot, indicating that the last one has been shot. When "RGAEBN = 0", the predetermined three images have been shot. This indicates the case immediately after all the auto bracket shooting is completed or when there is no setting for the auto bracket shooting. Therefore, the fact that the content of the register RGAEBN is “2” or “1” means that one or two of the three auto bracket shootings are performed.
This means that only one frame has been completed, indicating that the camera is in the middle of auto bracket shooting.Accepting a new dial operation for changing the number of auto bracket steps from this state may be confusing for the photographer, It must be banned. Therefore, in this step, the contents of the dial register RGH storing the dial input value are cleared to "0". This prohibits the contents of the auto bracket stage number register RGAEB from being updated in the next step 50.

[Step 50] Auto bracket stage number register RG
The contents of the AEB and the contents of the dial register are added and stored in the register RGAEB again. As mentioned above, dial 5
It is assumed that the minimum resolution by one click can be freely set every 0.5 steps or every 1.0 steps. If the shutter time is different from the resolution of the aperture value, a program for increasing the content of the register RGAEB to an integral multiple may be inserted, and the detailed description is omitted here because it is not related to the present invention.

[Step 51] Auto bracket stage number register RGAE
Register B for auto bracket stage number register RGAEBD
To be stored. The contents of the exposure correction value register RGCOMP are stored in the exposure correction value display register RGCOMPD.

[Step 52] The contents of the register RGAEBD are output from the output port PBD, and the contents of the register RGCOMPD are output from the output port PCD. As a result, the indicators SEG5 and S
The display of the auto bracket mode setting is displayed on EG6.

That is, a numerical value indicating the number of stages, for example, “0.5” is displayed on the display SEG5. The decoder F used at this time
D, indicator SEG5 is also used for aperture display,
The aperture value is decoded to the number of F-numbers from the apex value Av, and the decoding of the number of auto bracket steps is, for example, every 0.5 steps, so it is necessary to change or switch the decoding contents. It is necessary to display the number of steps only when entering the auto bracket step number setting mode, which is the flow from step 38 described above.In this case, the shutter time and aperture value are displayed at step 44 `` DISP OFF ''. Off, output port
It can be considered that a blank code is output from the PFD to the decoder FD. Therefore, as a configuration of the decoder FD, when data such as an aperture value display is output from the output port PFD, the data is decoded with priority and displayed on the display SEG5, and the output content from the output port PFD is displayed as a blank. At this time, if the configuration is such that the number of auto bracket steps is displayed based on the information on the number of auto bracket steps output from the output port PBD, it is possible to perform appropriate numerical display.

On the other hand, the display SEG6 has information on the number of auto bracket stages output from the output port PBD and the
The exposure compensation information output from the PCD is displayed.
As an example of the display when the auto bracket is set, if the exposure compensation is "0", the data input terminals C4 to C0 are "00000", and if the auto bracket stage number is "1.0", the data input terminals A2 to A0 Data "010" is output port P
Data converter DE in decoder CD input via CD and PBD
C sets the data output terminals D6, D8, D10 corresponding to the input to "1"
In order to set the others to “0”, the drivers DR6, DR8, and DR10 are respectively operated by the segments SEG6 06, SEG6 08, and SEG6 in the display SEG6.
10 is lit. As a result, the display state becomes as shown in FIG. 12 (c), and the set auto bracket photographing is -1 stop under, no correction (proper), and +1 stop over the proper exposure calculated from the photometric value. It can be seen at a glance that three photographs are taken.

If the number of auto bracket steps is the same "1.0" and exposure compensation "+0.5" is set, data input terminals A2 to A
The data “010” is also stored in 0 as the data input terminals C4 to C4.
Since data "00001" is input to C0 via the PBD and PCD, the data conversion unit DEC in the decoder CD sets the data output terminals D7, D9 and D11 corresponding to the input to "1",
To set others to “0”, the drivers DR7, DR9, DR11
The segments SEG6 07, SEG6 09, and SEG611 in G6 are displayed. As a result, the display state becomes as shown in FIG. 12 (d), and the set auto bracket photographing is -0.5 step under, +0.5 step over, +1.5 step with respect to the proper exposure calculated from the photometric value. It can be seen at a glance that over three photos are taken.

After such a display is made, the program
Proceed to 53.

[Step 53] It is determined whether or not the content of the above-mentioned auto bracket shooting number register RGAEBN is “0”. As a result, if the result is other than "0", the auto-bracket mode has already been set or the auto-bracket shooting is in progress. If "RGAEBN = 0", it means that an action to newly set the auto bracket mode has been performed. In this case, the process proceeds to step 54.

[Step 54] Since the auto bracket shooting is newly set, the auto bracket shooting count register RGAEBN is set.
Is set to “3”, and the fact that three auto bracket shootings are to be performed is stored, and the process proceeds to step 55.

[Step 55] A flag FME indicating whether or not the multiple photographing mode is set is determined. When the mode is not the multiple shooting mode, the process returns to the start. If the mode is the multiple shooting mode, the process proceeds to step 56.

[Step 56] The content of the multiple shooting number register RGME is set to "3". This is because the number of times of auto bracketing is determined in advance to be three times, so that even if the number of times of multiplex shooting is set arbitrarily, it is forcibly set to three times to prevent a photographer's operation error and to prevent erroneous exposure. This is to eliminate the danger.

 Then the program returns to the start.

Also, once the on signal of the switch swAEB is input, the flag FsAB is set to 1 in step 43, and therefore, even if the off signal of the switch swAEB is input, the program proceeds from step 38 to step 39 to step The procedure proceeds from step 40 to step 41 to step 46, and it is possible to continue to maintain the auto bracket step number change mode on the dial 5, so that the photographer can operate the dial 5 with the switch swAEB depressed. Become.

The release of the auto bracket stage number change mode is performed by turning on the first stroke switch sw1, turning on the exposure compensation switch swCOMP, or turning on the switch cover 6.
Can be performed by closing the switch and turning off the switch swSET. That is, when the ON signal of the first stroke switch sw1 is input, the program proceeds in the order of Step 1 → Step 2 → Step 3 →... Even if the ON signal of the exposure compensation switch swCOMP is input, Step 1 → Step The program proceeds in the order of 25 → Step 2 → Step 3 →... In each case, the flag FsAB is reset to 0 in Step 10, and the display is switched to the normal display in Step 11. Also switch swSE
When the T OFF signal is input, step 26 → step 27
In the course of the program that proceeds from step 36 to step 37, the display of the auto bracket mark disappears in step 36, the flag FsAB is reset in step 37, and the process does not proceed to the automatic bracket stage number change mode again.

Next, the exposure calculation in the auto bracket mode will be described.

In the case of the shutter priority mode, the contents of the auto bracket step number register RGAEB are stored in the aperture bracket step number register RGBAv as described in step 7, and in the case of the aperture priority mode and the manual exposure mode, as described in step 23. The values are stored in the shutter bracket number register RGBTv, respectively. In step 8, since the mode is the auto bracket mode and the flag FAEB is set to 1,
Proceed to step 57.

[Step 57] It is determined whether or not the content of the register RGAEB is zero. If the content is zero, three shootings are performed with the same exposure (standard exposure in the embodiment), and since it is meaningless, it is necessary to prohibit the auto bracket shooting. Therefore, in this case, the process proceeds to step 58.

[Step 58] Flag indicating auto bracket mode
Reset FAEB to 0. Also, the output of the output port PAEB is set to “0” and the auto bracket mark display is turned off.

[Step 59] Since the auto bracket shooting is prohibited, the content of the auto bracket shooting number register RGAEBN is cleared to 0.

Next, by proceeding to step 9, the exposure calculation of the auto bracket is not performed, the flag FsAB is reset to 0, and the normal routine is executed.

On the other hand, if the content of the auto bracket step number register RGAEB is not zero in the step 57, the exposure calculation and the display of the auto bracket mark need to be performed based on the step number information.

[Step 60] The output of the output port PAEB is set to "1", and the auto bracket mark is displayed. This is because when the switch swSET is turned off by closing the switch lid 6 from the auto bracket mode setting state, all the display is turned off in step 36, so it is necessary to turn on the light again when the first stroke switch sw1 is turned on. Because there is.

[Step 61] It is determined whether or not the first stroke switch sw1 is turned on. If it is turned on, the process proceeds to step 62.

[Step 62] The contents of the shutter information register RGTv are stored in the shutter information stack register RGTvS, and the contents of the aperture information register RGAv are stored in the aperture information stack register RG.
Store each in AvS. This is because in auto bracket shooting, three shots are taken while changing the shutter speed or the aperture value. At this time, the microcomputer COM controls the camera and the shutter time information or the aperture value information before the change is used. It is necessary.

[Step 63] First stroke switch in step 61
Since sw1 has been confirmed to be turned on, here the contents of the auto bracket stage number display register RGAEBD are set to "00
0 ”. This is the first stroke switch sw1 in the shooting in which the auto bracket mode setting described later is performed.
This is for display during ON.

[Steps 64 and 65] In both of these steps, it is determined whether the contents of the auto bracket shooting number register RGAEBN is "3", "2", or "1". That is, the number of the next photograph to be taken out of the three predetermined auto bracket photographing is determined. If "RGAEBN = 3", that is, the first one of the predetermined three auto bracket shootings is to be shot, step 64 is executed.
Go to step 69.

If "RGAEBN = 2", that is, if the second of the three predetermined auto bracket shootings is to be photographed, the process proceeds from step 64 to step 65 to step 68.

Also, "RGAEBN = 1", that is, auto bracket shooting predetermined 3
If the last one of the images is to be photographed, the process proceeds from step 64 to step 65 to step 66.

Here, the case where the content of the auto bracket shooting number register RGAEBN is “3” will be described first.

[Step 69] As described above, if "RGAEBN = 3", the process proceeds to this step, where the exposure correction value register RGCOMP
The value obtained by subtracting the contents of the auto bracket stage number register RGAEB from the contents of
And go to step 70.

[Step 70] The contents of the aperture information register RGAv and the contents of the aperture bracket stage number register RGBAv are added and stored in the register RGAv again. Also shutter information register
RGTv contents and shutter bracket stage number register RGBTv
Is added and stored in the register RGTv again. This is because the aperture information calculated in the shutter priority mode is
In the aperture priority mode, this means that the calculated shutter time information is changed according to the number of auto bracket steps.
That is, if the number of auto bracket steps is set so as not to be a negative number at the time of step 50, the value after the calculation at step 70 is an exposure value on the under side with respect to the standard exposure value. Also, in the manual exposure mode, since the shutter passes through the step 23 similar to the aperture priority mode, the shutter speed is changed, and the aperture value is not changed unlike the conventional camera, so that only the exposure with a constant depth of field is performed. Switchable auto bracket shooting becomes possible.

Next, the auto bracket shooting number register RGAEBN
Is described as "2".

[Step 68] As described above, if “RGAEBN = 2”, the process proceeds to this step, where the exposure correction value register RGCOMP
Is stored in the exposure correction value display register RGCOMPD as it is.

Since the second image is shot at the standard exposure value irrespective of the number of steps of the auto bracket, the program is not shifted to the shutter time or the aperture value as performed in step 70, and the program proceeds to step 9 and thereafter. And proceed.

Next, the auto bracket shooting number register RGAEBN
Is described as "1".

[Step 66] As described above, if “RGAEBN = 1”, the process proceeds to this step, where the exposure correction value register RGCOMP
Of the exposure compensation value display register RGCOMPD.
To be stored.

[Step 67] The content of the aperture information register RGAv and the content of the aperture bracket stage number register RGBAv are subtracted, and stored again in the register RGAv. Also shutter information register
RGTv contents and shutter bracket stage number register RGBTv
Is subtracted and stored in the register RGTv again. This is because the aperture information calculated in the shutter priority mode is
In the aperture priority mode, this means that the calculated shutter time information is changed according to the number of auto bracket steps.
Here, contrary to the case of step 70 described above, the value after the calculation is an exposure value that exceeds the standard exposure value by the number of auto bracket steps.

In step 61, the first stroke switch sw1
If it is determined that is turned off, the photometric timer is in operation and the program proceeds from step 71 to step 72 to step 9 separately from steps 62 to 70 described above.

[Step 71] Similarly to step 62, the contents of the shutter information register RGTv are stored in the shutter information stack register RG.
The contents of the aperture information register RGAv are stored in the TvS in the aperture information stack register RGAvS, respectively.

[Step 72] Auto bracket stage number register RGAE
Register B for auto bracket stage number register RGAEBD
Then, the contents of the exposure correction value register RGCOMP are stored in the exposure correction value display register RGCOMPD.

FIG. 13 summarizes the data stored in each register by the respective processes of the steps 62 to 70 and steps 71 and 72 described above.

With the processing data shown in FIG. 13, the program steps further proceed, and in step 11, the shutter time display by the display SEG1 and the aperture value display by the display SEG5 are performed, and in the subsequent step 12, the exposure by the display SEG6 is performed. The display based on the correction value and the auto bracket step value (step value) is performed. This display example will be described below.

Now, the shutter priority mode is selected by the double exposure mode switch swSEL, "-1.0" is set as the exposure correction value, and "1/125" is set as the shutter time. It is assumed that an aperture value of "5.6" is obtained and "1.0" is set as the number of auto bracket steps. The setting method of these set values is as described above. Under this assumption, the contents of the exposure correction value register RGCOMP are "11110" from FIG. 10 (a), and the contents of the auto bracket stage number register RGAEB are "010" from FIG. 10 (b). The fact that the exposure compensation value setting is "-1.0" and the auto bracket step number setting is "1.0" means that the correct exposure is
This means that three photographs are taken with the exposure amount changed in three steps of two steps under, -1 step under, and appropriate.

Hereinafter, what kind of display is performed for cases 1 to 6 shown in FIG. 13 will be described.

In Case 1, before the first of three predetermined auto bracket shootings, the content of the exposure compensation display register RGCOMPD becomes “RGCOMP−RGAEB = 11100”.
Since the contents of the auto bracket stage number display register RGAEBD is “000”, when step 12 is executed, the operation of the decoder CD described above causes the display SEG6 to display the segment SEG6 0.
Only 4 is lit. In addition, the display SEG1 has a seven-segment display, which is the denominator of the shutter speed `` 125 '', and the display SEG5 has the auto bracket display exposure value `` 5.
From “6”, “8.0” corresponding to the value under the auto bracket step by one step is displayed.
Since the display SEG3 is turned on, the display shown in FIG. 14A is performed as a total display. This display indicates that the photographer who has already pressed the first stroke switch sw1 and is in the standby state for the first frame of the auto bracket photographing is ready for the second stroke switch sw1.
When sw2 is pressed in to perform the release operation described later, “1/12
Exposure is performed with a control value of "8.0" at the shutter speed of "5" shutter speed, and the exposure amount is -2 steps lower than the appropriate exposure amount when there is no exposure correction setting and auto bracket setting. It clearly shows that there is.

In case 2, before the second of the three predetermined auto bracket shootings, the content of the register RGCOMPD is "R
GCOMP "is equal to" 11110 ", and the content of the auto bracket stage number display register RGAEBD is" 000 ". Therefore, when step 12 is executed similarly to the case 1 described above, the operation of the decoder CD causes the display SEG6 to display the segment SEG6 06
Only lights up. In addition, the display unit SEG1 displays “125”, which is the denominator of the shutter speed in the seven-segment display as in Case 1, and the display unit SEG5 displays “5.6”, which is the standard exposure value of the auto bracket. Since "1" is output from the output port PAEB at 60, and "1" is output from the output port PLF at step 101, which will be described later, the display SEG3 blinks, and the total display is shown in FIG. Is displayed. This display indicates that the photographer who has already pressed the first stroke switch sw1 and has entered the release standby state for the second auto bracket photographing is to press the second stroke switch sw2 as it is to perform a release operation to be described later. Exposure is performed with a control value of "5.6" at the shutter speed of "/ 125" and the exposure is -1 step below the appropriate exposure when neither the exposure compensation setting nor the auto bracket setting is made. Is clearly shown.

In case 3, before the third of the predetermined three auto bracket shootings, the content of the register RGCOMPD is "R
GCOMP + RGAEB = 00000 ", and the content of the register RGAEBD for displaying the number of brackets is" 000 ". Therefore, when step 12 is executed, the display SEG6 is operated by the operation of the decoder CD.
In, only the segment SEG6 08 is turned on. In addition, the display SEG1 displays the denominator of the shutter time “12
5), and the display unit SEG5 displays the standard exposure value of the auto bracket, 4.0, respectively.
At 0, “1” is output from the output port PAEB, and step 1 described later
Since “1” is output from the output port PLF at 01, the display SEG3 blinks, and the
The display shown in FIG. 14 (c) is performed. This display is already the first
For the photographer who is in the standby state for the third frame of the auto bracket shooting by pressing the stroke switch sw1, if the second stroke switch sw2 is pressed and the release operation described later is performed, the shutter time of “1/125” is obtained. Exposure is performed with a control value of 4.0 at the time,
This clearly shows that the exposure amount matches the proper exposure amount calculated by the camera.

In case 1, when the first stroke switch sw1 is turned off, the photometric timer starts, and the process proceeds to case 4.
Similarly, in case 2, the first stroke switch sw1
Is turned off, the light metering timer is entered, and in case 5, when the first stroke switch sw1 is turned off in case 3, the light metering timer is entered, and the operation proceeds to case 6, respectively. Will be described together because they have almost the same display.

In cases 4, 5, and 6, each of auto bracket shooting
Before photographing the second photograph, before photographing the second photograph, and before photographing the third photograph, the photographer releases the depression of the first stroke switch sw1 and starts the photometric timer operation. In these cases, “RGCOMPD = 111110” "," RGAEBD = 010 ", and when step 12 is executed, the operation of the decoder CD
Three segments of SEG6, SEG6 04, SEG6 06, and SEG6 08, are lit on. In addition, the shutter time information `` 125 '' is displayed on the display SEG1, the aperture value `` 5.6 '' which is the standard exposure value of the auto bracket is displayed on the display SEG5, and the display SEG3 is also turned on in step 60.
FIG. 14D shows the total display.
However, in case 5 and case 6, step 101 described later is used.
Causes the display SEG3 to blink. This display shows how the exposure distribution is set by setting the exposure correction value and the number of steps of the auto bracket for the photographer who has left the first stroke switch sw1 and has left the shooting standby state, and the standard exposure of the setting. This clearly shows the shutter time and the aperture value according to the value. In each of Cases 4, 5, and 6, when photographing, the first stroke switch sw1 of the release button is always pressed, so that the calculation after Step 62 is performed, and the operation returns to Cases 1, 2, and 3, respectively. No problem with bracket shooting. When the auto bracket mode is not set and the exposure compensation is set, the display state of the display SEG6 is such that the segment indicating the exposure compensation value as shown in FIG.
Only one of the EG6 16 is selected and displayed, which is the same as the display state when the first stroke switch sw1 during auto bracket shooting shown in FIGS. 14 (a) to (c) is pressed. However, the display SEG3 lights up during auto bracket shooting to indicate that auto bracket shooting is being performed, so that the photographer is not confused.

Next, a case where the vibration mode is set by operating the dial 5 after setting the auto bracket mode will be described. Since the bracket shooting in the vibrator shooting is basically meaningless, it is more effective to cancel the auto bracket mode. Therefore, if it is determined in step 31 that the vibration mode is set, the process proceeds to step 73.

[Step 73] The output of the output port PAEB is set to “0”, and the display of the auto bracket mark is turned off. Also, the flag FABR of the auto bracket mode is reset to 0. In addition, set the contents of the auto bracket shooting number register RGAEBN to 0.
To clear.

Next, the case of setting the multiple shooting mode will be described. When an ON signal of the switch swME is input in conjunction with the opening of the switch lid 6, the process proceeds from step 39 to step 74.

[Step 74] The flag FsME indicating that the multiple imaging switch swME has been turned on is set to 1. Also, the flag FsAB indicating that the auto bracket switch swAEB has been turned on is set to 0.
Reset to.

[Step 75] Output ports PTD, PFL, PAEB, PME, PFD, PB
Set the D and PCD outputs to "0" and turn off all displays. Next, the output of only the output port PME is set to “1”, and the multiple shooting mode mark is displayed on the display SEG4.

[Step 76] Set the flag FME indicating the multiple photographing mode to 1
Set to.

[Step 77] It is determined whether or not the mode is the auto bracket mode. If the mode is the auto bracket mode, the process proceeds to step 78.

[Step 78] Since the mode is the auto bracket mode,
As in step 56, the number of multiple shots is forcibly set to three, that is, the content of the register for multiple shots RGME is set to "3".

If the auto bracket mode has not been set in step 77, the process proceeds to step 79.

[Step 79] Similar to step 46 and the like, an information reading routine accompanying the dial operation is executed.

[Step 80] The contents of the multiplexing number register RGME and the contents of the dial register RGH are added, and the register RGME is added again.
To memorize. Since the number of multiplexing is an integer, if the resolution of one click of the dial 5 is 0.5 step,
The contents of the dial register RGH are doubled and then added. Although it is necessary to prevent the contents of the register RGH from becoming a negative number, it is omitted here.

[Step 81] The contents of the multiplex number register RGME are output from the output port PFD and displayed on the display unit SEG5.

Then the program returns to the start. Also, once the switch swME ON signal is input, the flag FsME is set to 1 in step 74, and then the switch swME
Step 39 → Step 40 even if the ME off signal is input
→ Proceeding to step 77, it is possible to maintain the multiple image capturing number setting mode. The switch from the auto bracket stage number change mode to the multiple shooting setting mode
It is clear from the flow of FIG. 3 that the swME only needs to be turned on once, and the reverse transition only needs to be turned on once by the switch swAEB.

Next, when the number of multiplexing is set once, and then the number of multiplexing is set to zero (0), it is necessary to cancel the multiplex photographing mode and turn off the multiplex photographing mark. This program is executed by proceeding to step 82 because the flag FME is set to 1 in step 9.

[Step 82] If the content of the multiple-shot number register RGME is zero, the flow advances to step 83.

[Step 83] Set the flag FME indicating the multiple photographing mode to 0
Reset to. Also, set the output of output port PME to “0”,
Turn off the display of the multiple shooting mark.

If the content of the multiple shooting number register RGME is not zero in step 82, the process proceeds to step 84.

[Step 84] The output of the output port PME is set to “1” to display the multiple shooting mark. This is because the display is all turned off in step 36, so that when the first stroke of the release button 1 is performed again, the photographer is informed of the multiple photographing mode.

 As described above, the preparatory stage of photographing is completed.

Next, a sequence after the second stroke of the release button 1 is performed will be described. When the second stroke of the release button 1 is performed and the ON signal (release signal) of the second stroke switch sw2 is input to the input port PA1,
The process proceeds from step 20 in FIG. 3 to step 100 in FIG.

[Step 100] It is determined whether or not the auto bracket mode is set based on the state of the flag FAEB. If the mode is the auto bracket mode, the process proceeds to step 101; otherwise, the process proceeds to step 102.

[Step 101] The output of the output port PFL is set to “1”, and the auto bracket mark on the display unit SEG3 blinks. Thus, the photographer can know that the auto bracket photographing has started.

[Step 102] Self-switching SELF on input port PA6
It is determined whether or not the ON signal is input. If the ON signal has been input, the photographing is performed by the self-timer, so the flow proceeds to step 103; otherwise, the flow proceeds to step 104.

[Step 103] The self-timer measures 10 seconds.

[Step 104] The content of the aperture information register RGAv is output from the output port PAV. As a result, the aperture control drive circuit DAV converts the content of the register RGAv into actual aperture information, and starts aperture control via an aperture driving actuator CAV such as a stepping motor.

[Step 105] A pulse signal is output from the output port PE0, the transistor TR0 is turned on, and the first fixed combination magnet MG for mirror-up is used.
Energize to 0. Thereby, the mirror is raised by a known spring force.

[Step 106] It is determined whether or not the ON signal of the switch swMRUP for detecting the mirror-up end is input to the input port PA2. Here, this loop is repeated until the ON signal is input, that is, until the mirror is completely moved up.

[Step 107] Since the content of the shutter information register RGTv is an apex value, it is converted (expanded) into real-time data.

[Step 108] A pulse signal is output from the output port PE1, and the transistor TR1 is turned on to supply electricity to the shutter front curtain magnet MG1. As a result, the shutter front curtain runs.

[Step 109] It is determined whether or not the content of the register RGTM is in the valve mode. If the valve mode is set, go to step 110; otherwise, go to step 111.
Proceed to.

[Step 110] Wait for the OFF signal of the second stroke switch sw2 to be input. This is because in the valve mode, it is necessary to keep the shutter open while the ON signal of the second stroke switch sw2 is being input.

[Step 111] Since the mode is not the valve mode, step 1
In step 07, the real time is counted based on the decompressed data, and the calculated shutter time is counted.

[Step 112] When the real-time counting is completed, a pulse signal is output from the output port PE2, and the transistor TR2 is turned on to supply electricity to the shutter rear curtain magnet MG2. As a result, the rear curtain of the shutter runs.

[Step 113] It is determined whether or not the ON signal of the shutter rear curtain switch swCN2 is input to the input port PA5. Here, this loop is repeated until the ON signal is input, that is, until the traveling of the rear curtain of the shutter is completed.

[Step 114] The output of the output port PAV is set to “0”.
As a result, the aperture returns to the open state.

[Step 115] The output of the output port PD is set to “1”, and the transistor TR3 is turned on to rotate the charge motor MD for mirror down and shutter charge.

[Step 116] It is determined whether or not the multiple shooting mode is set based on the state of the flag FME. If in the multiple shooting mode, go to step 117; otherwise, go to step 1
Continue to 20.

[Step 117] Subtract 1 from the content of the multiplexing number register RGME and store it again in the register RGME.

[Step 118] It is determined whether or not the content of the multiplex number register RGME is zero. If zero, step 119
If not zero, go to step 121.

[Step 119] The content of the multiplex number register RGME is 0
Means that the multiple photographing has been completed, the flag FME indicating the multiple photographing mode is reset to 0. Further, the output of the output port PME is set to “0”, and the display of the multiple shooting mark is turned off.

[Step 120] The timer for film feeding is started. Further, the output of the output port PB is set to “1”, and the transistor TR5 is turned on to rotate the film feeding motor MB.

If the multiple photographing mode is continued, the contents of the multiplex number register RGME are not zero, so that the process proceeds from step 118 to step 121, and since the film does not pass through step 120, the film is not fed. Therefore, multiple photographing is performed. When the multiple photographing is completed, the content of the register RGME becomes zero, so that the film is fed in step 120 after the multiple photographing mode is released as described above.

[Step 121] It is determined whether or not the ON signal of the charge completion detection switch swCGE is input to the input port PA3. ON signal is not input. That is, if the charging is not completed, the process proceeds to step 123, and if the charging is completed, the process proceeds to step 122.

[Step 122] Since charging is completed, the output of the output port PD is set to “0”, and the power supply to the charging motor MD is cut off.

[Step 123] It is determined whether or not the on signal of the switch swFLM, which is turned on each time one frame of film is completed, is input to the input port PA4. If the ON signal has not been input, that is, if the feeding of one frame of film has not been completed, the process proceeds to step 124, and if completed, the process proceeds to step 125.

[Step 124] The state of the film feeding timer is determined. When the film is over, no more film can be fed, so the switch swFLM does not turn on,
In such a case, the time counting by the film feeding timer, which is a one-second timer, for example, ends. When the timing is completed, the process proceeds to step 150, and when not completed, the process returns to step 121,
The above-described sequence (step 121 → step 123) is repeated.

[Step 125] If it is detected in step 123 that the off signal of the switch swFLM has been input, the output of the output port PB is set to “0”, the transistor TR5 is turned off, and the film feeding motor MB is stopped.

[Step 126] It is determined whether or not the auto bracket mode is set based on the state of the flag FAEB. If the mode is not the auto bracket mode, the process proceeds to step 135, and if so, the process proceeds to step 127.

[Step 127] Shutter information stack register RGT
The contents of vS are stored in the shutter information register RGTv. Similarly, the contents of the aperture value information stack register RGAvS are stored in the aperture value information register RGAv. This allows the register
In the RGTv and the register RGAv, the shutter time information and the aperture value information, which are the exposure amounts of the standard exposure value before performing the bracket operation, are respectively restored.

[Step 128] “1” is subtracted from the content of the auto bracket shooting number register RGAEBN, and the register is re-registered.
Store in RGAEBN.

[Step 129] The content of the register RGAEBN, from which “1” has been reduced as described above in Step 128, is “0”
Is determined. If the content of the register RGAEBN is “0”, it means that the predetermined three auto bracket shootings have been completed, and the program proceeds to step 132. Otherwise, go to step 130.

[Step 130] Switch sw input to input port PA7
The CS mode is used to determine whether the camera is in continuous shooting mode or single shooting mode. In continuous shooting mode, NEXT3 (3rd
Jump to FIG. 8). In the case of the single shooting mode, the process proceeds to step 131.

[Step 131] Wait until an off signal of the second stroke switch sw2 is input. Since the photographing mode is the single shooting mode, the sequence does not proceed to the next sequence unless the photographer loosens the pressing operation of the release button 1 to release the ON state of the second stroke switch sw2 once. When the off signal is input, the program
Jump to NEXT3.

The jump from step 130 or 131 to NEXT3 is during auto bracket shooting, and when the predetermined three auto bracket shootings have not been completed yet, the camera automatically jumps to NEXT3 without performing a new photometry operation. The above-mentioned steps make it possible to calculate the exposure shift based on the number of bracket steps and move to the next shooting.
This is as described for the auto bracket calculation of 62 to 70.

In step 129, the predetermined 3 of the auto bracket shooting
If you have determined that you have taken a photo,
Proceed to 132.

[Step 132] “0” is output from the output port PFL.
As a result, the blinking of the indicator SEG3 is stopped, and the display SEG3 enters a normal lighting state.

[Step 133] Data “3” is set in the auto bracket shooting number register RGAEBN. This makes it possible to shoot three new auto brackets.

[Step 134] Wait for the OFF signal input of the second stroke switch sw2. Auto Bracketing Shooting Since the predetermined three shots have been completed, the photographer has noticed that there is a break in shooting regardless of whether it is in single shooting mode or continuous shooting mode set by the switch swCS connected to the input port PA7 In order to notify the user, the photographer does not proceed to the next photographing unless the release button 1 is depressed to turn off the second stroke switch sw2 once.

When the off signal of the second stroke switch sw2 is input, the program jumps to the start.

Next, the case where the mode is not the auto bracket mode will be described. In this case, since the flag FAEB is 0, the step
Go from step 126 to step 135.

[Step 135] Switch sw input to input port PA7
It is determined whether the mode is the continuous shooting mode or the single shooting mode from the on / off state of CS. In the case of the continuous shooting mode, the process returns to the start. In this case, the release button 1 is pressed, and
Since the ON signal of the second stroke switches sw1 and sw2 has been input, the next shooting is started. In the case of the single shooting mode, the process proceeds to step 136.

[Step 136] Wait for the OFF signal of the second stroke switch sw2 to be input. Since the single shooting mode is set, the photographer does not proceed to the next shooting sequence unless the photographer loosens the pressing operation of the release button 1 and turns off the second stroke switch sw2 once. When the off signal is input, the process returns to the start.

Next, the case where the film is completed during the photographing will be described. In this case, as described above, the time measurement by the film timer, for example, a one-second timer is terminated.
4. Go to step 150 from 4.

[Step 150] The output of the output port PC is set to “1”, and the transistor TR4 is turned on to rotate the rewind motor MC. Thereby, rewinding of the film is started.

[Step 151] A rewind timer used to detect whether or not rewinding of the film is completed is started.

[Step 152] It is determined whether the state of the film switch swFLM has changed. Step 151 if it changes
Return to and restart the rewind timer. If there is no change, the process proceeds to step 153.

[Step 153] It is determined whether the counting by the rewind timer has ended. If not, step 15
Return to 2.

As can be seen from the above, the loop of steps 152 and 153 proceeds during the feeding of one frame, and when the completion of feeding of one frame is detected, the process proceeds from step 152 to step 151. When rewinding the film, this loop is executed. Will repeat. After that, when all the films are caught in the patrone,
For example, the sprocket does not rotate and the state of the film switch swFLM does not change. When this is detected, the process proceeds to step 154.

[Step 154] The output of the output port PC is set to “0”, the transistor TR4 is turned off, and the rewind motor MC is stopped. Thereby, the rewinding of the film is completed.

[Step 155] The flag FAFB indicating the auto bracket mode is reset to 0. Also, the content of the auto bracket shooting number register RGAEBN is cleared to “0”. Further, the outputs of the output ports PAEB and PFL are both set to "0" to turn off the blinking display of the display SEG3 (auto bracket mark).

[Step 156] Register RGA for auto bracket stage number
Clears both the contents of the EB and the auto bracket stage number display register RGAEBD to "000". Further, the register R
Outputs the contents of GAEBD to output port PBD.

 Then the program returns to the start.

Also, if the film ends in the middle of auto bracket shooting, that is, three consecutive shots should be taken normally, but if the film ends in the middle, a step is taken for the first or second frame.
You enter the routine after 150. In such a case, if the auto bracket shooting is continued on the newly loaded film, there is a risk that the subject is different and the photographer may misunderstand, so let the photographer know that, It is desirable to cancel the auto bracket mode. Looking at this in the flowchart of FIG.
When the film ends after the flashing display of the auto bracket mark is made in 101, the process automatically shifts to film rewinding. During the rewinding of the film, the blinking display of the auto bracket mark has not been released yet. Therefore, by displaying an auto bracket mark that is not normally displayed during the film rewind,
The photographer can know that the film has ended without the auto bracket shooting being completely ended. That is, the warning is displayed. In step 155, the flag FAEB indicating the auto bracket mode is reset to 0,
Since the contents of the auto bracket shooting number register RGAEBN are also cleared to "0", there is no inconvenience that auto bracket shooting continues on a newly loaded film as in a conventional camera.

According to the present embodiment, the exposure correction value information display and the auto bracket step number information display are the same bar graph display,
Since the same segment is used, when setting the auto bracket, it is possible to display at a glance the one-side setting combined with the exposure correction value information and the center value shift setting. In addition, it is possible to greatly reduce the possibility of making a setting different from the intended one without noticing that the exposure correction has been performed in advance, as compared with the related art.

(Correspondence between Invention and Embodiment) In this embodiment, the indicator 105b serves as a first indicator of the present invention, the display 105a serves as a second indicator, the display 105 serves as a display means, and the controller 101 serves as a display. Each corresponds to a display control unit.

(Effects of the Invention) As described above, according to the present invention, the exposure correction value information and all the auto bracket step number information are displayed by the plurality of first and second instruction portions of the display means. In addition, it is possible to confirm at a glance the exposure correction value information and the information on the number of auto bracket steps corresponding to the set number of times of auto bracket shooting, thereby preventing setting of incorrect information.

[Brief description of the drawings]

FIG. 1 (a) is a block diagram showing an embodiment of the present invention, FIG. 1 (b) is a flowchart thereof, and FIG. 1 (c) shows another indication state of the display in the embodiment of the present invention. Diagram,
FIG. 1 (d) is a view showing another indication state of the display device in one embodiment of the present invention, and FIG. 2 is a micro-display arranged in a camera incorporating the embodiment of FIG. 3 to 5 are flowcharts of the computer and peripheral circuits, FIG. 6 is a front view of the camera, FIG. 7 is a top view, FIG. 8 is a back view, and FIG. FIG. 2 is a circuit diagram showing the configuration of the decoder CD and the display SEG6. FIGS. 10 (a) and 10 (b) are diagrams showing data examples of the exposure correction value and the number of steps of the auto bracket in one embodiment of the present invention. FIG. 9 is a circuit diagram showing a configuration example of the data converter DEC shown in FIG. 9, and FIGS. 12 (a) to 12 (d) show the display SE shown in FIG.
FIG. 13 is a diagram showing a display example in each state in G6, FIG. 13 is a diagram summarizing processing results in each case in one embodiment of the present invention,
14 (a) to 14 (d) show indicators SEG1, SEG3, SEG shown in FIG.
FIG. 5 is a diagram illustrating a display example in each state in SEG6. 1 ... Release button, 4 ... Exposure mode selection knob, 5 ...
… Dial, swAEB …… Auto bracket switch, swC
OMP Exposure compensation setting switch, SEG3 to SEG6 Display, SPC Light receiving element, OP1 Operational amplifier, D1 Compression diode, COM Microcomputer, CD, AD, FD
...... Decoder, DIF ...... Dial interface circuit, 101 ...... Control unit, 103 ...... Exposure compensation setting unit, 105 ......
Display unit 107: Exposure compensation value storage unit 108: Auto bracket setting unit 109: Auto bracket stage number storage unit

Claims (1)

(57) [Claims] 1. An auto bracket photographing function for photographing by changing the exposure amount for a plurality of frames by a preset number of steps and an exposure correction function for photographing by changing the exposure amount by the set exposure correction value. An information display device for a camera, comprising: a plurality of first indicating units arranged at predetermined intervals;
A display unit having a plurality of second instruction units provided in correspondence with the first instruction unit; and a first unit for auto bracket photographing in a state where the exposure correction value is not set.
A second indicator facing the first indicator located at the reference position of the indicator, and a position in the first direction and the second direction opposite to the first direction around the reference position. First
Of the second instruction unit facing the first instruction unit at a position corresponding to the preset number of stages, and setting the exposure correction value to the auto bracket photographing. An information display device for a camera, further comprising: display control means for shifting the second instruction section by the exposure correction value to set the instruction state.