JPH028825A - Camera with auto bracket function - Google Patents

Abstract

PURPOSE:To prevent wrong information from being set by displaying exposure correcting value information and information about the number of auto bracket stages on one display means. CONSTITUTION:An index part 105b indicating the positions showing appropriate exposure amounts and the positions of corresponding exposure correcting amounts are provided in a way that the plural numerics in the part 105b can face respective display part 105a arranged in the form of a bar graph in a display part 105, which is used for displaying the exposure correcting value information and the information about the number of auto bracket stages. In auto bracket operation information about the number of auto bracket stages, which is stored in a 2nd storage means 109 is displayed together with exposure correcting value information currently stored in a 1st storage means 107. Conse quently, a photographer can recognize at a glance the exposure correcting information and all information about the number of auto bracket stages equal to the set number of auto bracket photographing operations, thereby preventing wrong information from being set.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to an improvement in a camera with an auto-bracketing function that enables continuous shooting while automatically changing exposure values.

The auto bracketing (or more precisely, auto exposure bracketing) function refers to the camera's exposure value (in the case of automatic exposure, an exposure control value automatically calculated from the subject brightness and film sensitivity, and in the case of manual exposure) teeth,
This refers to the offset of the camera relative to the shutter speed and aperture value set by the photographer. Simply put, this means that when photographing a certain subject, a camera has a function that automatically takes multiple photographs by changing the exposure value in several stages.

(Background of the Invention) In conventional cameras of this type, in order to simplify auto bracketing settings, under, appropriate, and over (
For example, -o, s, o, +o, s), the appropriate value calculated by the camera itself is used as the center for the appropriate distribution into underside and overside. .5 stages) is generally configured to be set.

By the way, depending on the shooting situation, only one side of the under side or only the over side (for example -1, 5, -1, 0-0, 5
There are cases where you want to distribute the exposure compensation by +0.5, +1.0, +1.5) or shift the center of the distribution of shooting exposure.In such cases, you can achieve this by setting the exposure compensation value. It is possible.

However, since the exposure compensation value and the number of auto bracketing steps are displayed independently on the display, it is difficult to understand when trying to perform the one-sided setting or center-shifting setting as described above, and there is a risk of setting unintended settings. had sex.

(Object of the Invention) An object of the present invention is to solve the above-mentioned problems and to provide at a glance exposure correction value information and information on the number of auto-bracketing steps including the set number of auto-bracketing shots.

(Features of the Invention) In order to achieve the above object, the present invention provides a display section arranged in a bar graph shape commonly used for displaying exposure compensation value information and auto bracketing step number information, A display means facing the display means having an index section indicating a position indicating an appropriate exposure amount and a position indicating an underexposure compensation amount and an overexposure compensation amount relative to this, and during auto bracketing,
The display means is provided with a display control means for displaying all the auto-bracketing step number information stored in the second storage means in combination with the current exposure correction value information stored in the first storage means, The present invention is characterized in that exposure correction value information and all auto-bracketing step number information are displayed on one display means.

(Embodiment of the invention) FIG. 1(a) shows the basic configuration of an embodiment of the present invention,
The flowchart is shown in FIG. 1(b).

When the power is turned on, the control section 101 first checks the on/off state of the first stroke switch 102, which is linked to the pressing operation of the release button, and if it is on, moves to the next photometry operation. On the other hand, if it is off, then the exposure compensation setting unit 103 checks whether the exposure compensation mode is set. As a result, if the exposure compensation mode is set, the process shifts to the photometry operation as described above. In other words, the photometry section 104 immediately
is driven to perform a photometry operation, and appropriate exposure information at this time is calculated from the photometry information obtained. Next, a plurality of display sections 105a arranged in a bar graph shape commonly displaying both auto bracket step number information and exposure compensation value information, and a position (0 ) and the positions (-1, -2, -3, +1, +
2. +3) A display section 105 having an indicator section 105b representing +3)
The current information will be displayed on display section 1, but since no information has been set at this point, display section 1
At 05, only the display indicating that no exposure correction value information is provided, that is, only the display section 105a at the "0" position of the index section 105b lights up. Next, it is determined whether the mode is exposure compensation mode or not. If the mode is exposure compensation mode, the exposure compensation value information is read from the information input section 1.6 by the photographer's external operation, and the exposure compensation value is set and input. The information is stored in the exposure correction value storage section 107, and the process returns to the starting position.

Thereafter, the same operation is repeated, and the indicator at the position of the numerical value corresponding to the exposure correction value information set at this time lights up on the display unit 105. As a result, by looking at the display section 105,
This makes it easy to check which exposure compensation value information has been set.

After that, when the auto bracketing mode is set by the auto bracketing setting section 108, the auto bracketing step number information is read from the information input section 106 by the photographer's external operation, and the auto bracketing step number information inputted is stored in the auto bracketing step number storage section. 109 and return to the starting position. In this embodiment, the number of auto-bracket shots is set in advance to "3 times". For example, if the photographer sets rl and OJ, shooting with an underexposure amount of rl and OJ steps, the appropriate one at this time. It is assumed that a total of three shootings are performed: shooting with the exposure amount, and shooting with the exposure amount on the rl and 04-stop over side. Further, here, the explanation will be continued assuming that no exposure compensation has been performed.

Therefore, as mentioned above, the number of auto bracket stages is rl, OJ
is set, the auto bracket stage number storage unit 1
09 stores the stage number information "r-1, 0, 0, +1.0", and the display section 105 displays a display as shown in FIG. 1(b). Therefore, by glancing at the display, the photographer can determine that no exposure compensation is performed, and that the exposure amount is 3.
You can see that auto bracketing will be performed twice.

Also, by the above operation, the number of auto bracket stages is set to r2.
Assuming that OJ is set, the auto bracketing stage number storage section 109 stores stage number information of "r-2,0, O, +2.0", and the display section 105 shows the stage number information as indicated by the dotted line in FIG. 1(b). Various displays will be made. In other words, for the appropriate exposure amount, r2. The display switches to the OJ under side and over side. Also, at this time, the exposure compensation value is rl1. O.J.
If rl1. Centering on the display of the position of OJ, rl3. The positions of OJ and r-1, OJ are displayed.

FIG. 6 shows the arrangement of each operating member when looking from the front of the camera incorporating the device embodying the embodiment shown in FIG. 1, and FIG. 7 shows the arrangement of each operating member when looking from above. FIG. 8 shows the arrangement of each operating member when viewed from the back side. 6th
In Figures ~8, ■ is the release button, 2 is the operating lever for selecting the shooting mode of continuous shooting (C) or single shooting (S), 3 is the operating lever for selecting the self-timer, and 4 is the shutter priority (Tv), aperture priority (Av), or manual (M) exposure mode selection knob. 5 is shutter speed, aperture value, or exposure step number information during auto bracket shooting (for example, 0. The so-called electronic dial, swM, is a switch for setting the aperture value, and is used to set the aperture value (for example, 2-bit conductive patterns and brushes that are 90 degrees out of phase with each other). , the aperture value can be changed by pressing the switch swM and operating the dial 5 in the manual exposure mode. Reference numeral 6 denotes a switch lid of a storage section 7 that stores switches that are used less frequently, swAEB an auto bracket switch stored in the storage section 7, and swME also stored in the storage section 7. The multiplex shooting switch swcOMP is an exposure compensation setting switch, and when setting the exposure compensation value, the exposure compensation value can be set or changed by operating the dial 5 while pressing the switch swCOMP.

FIG. 2 shows a concrete example of an electric circuit in which a microcomputer COM is used to control a series of operations.

The light-receiving element SPC receives reflected light from the subject and outputs a light-receiving signal to a high input impedance operational amplifier OP1 having a compression diode D1 connected to a feedback circuit. Operational amplifier OPI outputs logarithmically compressed object brightness information Bv via resistor R1. A variable resistor VR1 connected to a constant voltage source VGl outputs film sensitivity information Sv. An operational amplifier OP2 whose feedback circuit is connected to a resistor R2 calculates and outputs photometric information Ev=(Bv+Sv). The photometric information Ev is converted into a 4-bit digital value by the A/D converter ADC, and is input to the input port PGO-PG3 of the microcomputer COM.

When the dial 5 is operated, a 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 PHO to PG3 of the microcomputer COM. be done. The information in the dial interface circuit DIF is such that the pulse signal is sent to the output port P of the microcomputer COM.
It is reset by input from E3. Depending on which mode is selected by the exposure mode selection knob 4, the two series of exposure mode switches 5w5EL are turned on and off, and 2-bit information corresponding to the selected exposure mode is sent to the input ports PPo and PPI of the microcomputer COM. is input.

When the battery BAT is loaded into the camera, the microcomputer COM and display system decoder TD are activated.

A power supply Vbat is supplied to AD, FD, CD, dial interface circuit DIF, and the like. Further, when the first stroke switch swl connected to the input port PAO is turned on by the first stroke of the release button 1, the potential of the output port PF becomes high level, so that the transistor T Rb is turned on by the inverter INV and the resistor R3.
at turns on, and the voltage from the power supply V bat becomes the power supply V
The signal cc is supplied to circuits that consume a relatively large amount of power, such as operational amplifiers OPI and OP2 for photometry.

Input port PAl~12 of microcomputer COM
, the second stroke switch SW2 is turned on by the second stroke of the release button 1, turned off by raising the mirror,
Mirror up switch swM that turns on when the mirror is down
RUP, a charging completion detection switch swCGE that turns on when mechanical charging is completed, and a film switch sw that turns on every time the feeding of one frame of film is completed.
FLM, trailing curtain switch 5wC that turns on when trailing curtain travel is completed
N2, a self-switch 5w5EL that is turned on when the self-timer is set by the operating lever 3;
F, the switch 5wC5, which is turned on when continuous shooting mode is selected by the operating lever 5, and turned off when single shooting mode is selected, the aperture value setting switch swM, and the switch lid 6 are closed. The switch 5w5ET, which is sometimes off and turned on when opened, the multiplex shooting switch swME, the auto bracketing switch swAEB, and the exposure compensation setting switch swcO.
MPs are connected to each other.

The base of a transistor TRONTR2 is connected to the output port PEONPE2 via a resistor R10N12, and the transistors TR0-TR2 are connected to the first clamping magnet MG.
It controls the energization of the leading curtain magnet MGI, which causes the O1 leading curtain to run, and the trailing curtain magnet MG2, which causes the trailing curtain to run. Also, resistors R13~ are connected to the output boats PD, PC, and PB.
The bases of transistors TR3 to TR5 are connected through transistors 15 to 15, transistor TR3 drives charging motor MD, transistor TR4 drives rewinding motor MC, and transistor TR5 winds the film at high speed. The drive of each motor MB is controlled respectively.

From the output port PTD, the contents of the shutter time information register RGTv in the microcomputer 00M are output to the decoder TD, and the decoder TD converts the contents into a signal for displaying the shirt time and time, and the decoder TD converts the contents into a signal for displaying the shirt time and time. The signal is output to the displayed display 5EG1.

“1” (meaning high level) or “0” (meaning low level) from output ports PFL and PAEB
is output to the decoder AD, and when the decoder AD receives a signal of "1" from the output port PFL, it sends a signal for displaying the auto bracketing mark blinking to the connected display 5EG3 composed of a liquid crystal, etc. Output. When a signal of "1" is input from the output port PAEB, a signal for displaying the top bracket mark is output to the display 5EG3.

A signal of "1" or "O" is output from the output port PME to the display 5EG4, which is composed of a liquid crystal, etc.
When a signal of "1" is input to G4, a multiple shooting mark is displayed.

From the output port PFD, the microcomputer 00M
The contents of the aperture value information register RGAv or the contents of the multiplex shooting count register RGMH are output to the decoder FD, and the contents of the auto bracketing step display register RGAEBD are output from the output port PBD to the decoder FD.
and is output to the decoder CD. The output boat PCD also outputs the contents of the exposure correction value display register RGCOMD in the microcomputer C0M to the decoder CD. The decoder FD outputs a numerical display signal corresponding to each of the contents to the display 5EG5, which is connected to a display device 5EG5, which is configured with a liquid crystal, etc., while the decoder CD is connected to a bar-bluff-shaped display device, which is configured with a connected liquid crystal, etc. Display signals corresponding to each of the above contents are output to the display 5EG6 having a lined display.

From the output boat PAV, the contents of the aperture value information register RGAv in the microcomputer C0M are output to the aperture control drive circuit DAV. The aperture control drive circuit DAV is connected to the drive actuator CAV.
For example, the information converted into actual aperture information is output to a stepping motor or the like, and this is driven to perform appropriate aperture control.

Next, the operation of the microcomputer COM will be explained with reference to flowcharts shown in FIGS. 3 to 5.

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

[Step 1] Suppose that the photographer only makes the first stroke of release button 1, and the first stroke switch s
When the wl ON signal is input to the input port PAO, the process proceeds to step 2.

[Step 2: Output a “1” signal from the output port PF, turn on the transistor T Rbat, and turn on the power supply Vc.
c is supplied to each part. Next, a photometry timer is started. The photometry timer is used to continue supplying power Vcc for a predetermined period of time from the off signal input of the first stroke switch swl, so that even if the photographer releases the release button l, the photometry state continues for a predetermined period of time. It is possible to check the setting information and change the setting information using the exposure mode selection knob 4 while looking at the display. Note that this configuration can be easily performed using a hardware timer built into 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 RGEv.

[Step 4] Add the digital exposure compensation information stored in the register RGCOMD to the photometric information Ev stored in the register RGEv, and store the result in the register RGEv as new photometric information Ev including the exposure compensation information. . For inputting exposure compensation information, step 16
-18 will be detailed.

[Step 5] It is determined whether the shutter priority mode is set based on the input states of the input ports PPO and PPI. If the shutter priority mode is currently set, the process advances to step 6.

[Step 6] Subtract the contents of the shutter information register RGTv, which stores information set by operating the dial 5, from the contents of the register RGEv, and store the result (aperture information Av) in the aperture information register RGAv. let It is assumed that the contents of all registers in the microcomputer C0M are held while the battery BAT is loaded. Also, if you load the battery BAT for the first time,
It is assumed that a frequently used value, for example, 1/125 second, is initially set.

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

[Step 8] Determine the state of flag FAEB indicating whether auto bracketing mode is set. Assuming that auto bracketing mode is not currently set,
Proceed to step 9.

[Step 9] Determine the state of flag FMH indicating whether multiple shooting mode is set.

Assuming that the multiplex shooting mode is not currently set, the process advances to step 1o.

[Step 10 Auto bracket switch swAE
A flag FsAB indicating whether or not B has been operated is reset to 0. Also, a flag FsME indicating whether the multiplex photographing switch swME has been operated is reset to 0.

[Step 11] The contents of the aperture information register RGAv are transferred from the output boat PFD to the shutter information register R.
The contents of GTv are each output from the output boat PTD. As a result, the aperture value calculated by the calculation is displayed on the display 5EG5, and the set shutter speed time is displayed on the display 5EGI.

[Step 12] Exposure compensation value display register RGCO
The contents of MPD are output from the output boat PCD, and the contents of the auto bracket stage number display register RGAEBD are output from the output boat PBD. If the microcomputer COM has just been loaded with the battery BAT, each register RGAEB, RGCOMPD, RGAEBD,
It is assumed that RGCOMP (for exposure compensation value) and RGAEBN (for auto-bracketing number of shots) are each initially set to all O, and there are no settings for auto-bracketing or exposure compensation.

The decoder CD outputs and displays information corresponding to the exposure correction value and the auto-bracketing step value to the display 5EG6 based on the outputs of the output ports PCD and PBD. Here, the operation of the decoder CD will be explained.

FIG. 9 shows the basic configuration of the decoder CD and the display unit 5EG6.
It is composed of DR16. The data conversion unit DEC is equipped with data input terminals that receive and take 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 input. each first
It is expressed in binary data as shown in Figure 0 (a) and Figure 10 (b), and the Co-C4 is used as a data input terminal to receive and take exposure compensation information from the output boat PCD. There are 8 terminals in total, 5 terminals, and 3 terminals AO-A2 as data input terminals for receiving the information from the output boat PBD to which the auto-bracketing stage number information is output. Each piece of information input to the data input terminals CoNC4, AO to A2 is converted into display data by the data conversion unit DEC, and then sent to the display segment drivers DRO to DR1 via the data output terminal Do-D16.
6, respectively. Then driver DRO~DR
16 is each segment 5EG600~ in the display unit 5EG6
The SEG 616 are each independently driven to perform display. Here, the segment corresponding to the terminal from which "l" is output among the data output terminals Do-D16, for example, if the data output terminal Do is "1", the segment 5EG600 is
If data output terminal D8 is “1”, segment S E
G 608 lights up. The data converter DEC is, for example, an AND box as shown in FIG.

It can be configured with an OR gate, and as an example of data conversion, C4=C3=C2=C1=CO=O.

If A2=A I =AO=O, data output terminal D8
The output of Do-D7 and D9 to D1 becomes “1”.
Each output cover of 6 becomes "o". Also, C4=C3=C2=
l, C1=C0=O (exposure compensation step number is -0, 2), A
2=l, A1=AO=O (the number of auto bracket stages is 2.
0), the three outputs of Do, D4 and D8 become "1", and the other outputs become "°'O".

Returning to the explanation of step 12 above, it is assumed here that there is no auto bracketing mode setting and no exposure compensation setting, so rRGAEBD=OOOJ, rR
GcOMPD=ooo.

Since this value is outputted from the output ports PBD and PCD, the data input terminals A2 to AO and C4 to CO of the data conversion unit DEC are all "O".
Therefore, in order to set only the output of the data input terminal D8 to "1" in the data converting unit DEC, the driver DR8 drives the segment SEG 608 to turn on, and the other segments are turned off, and the display 5EG6 displays the signal shown in FIG. A display as shown in a) is displayed. This is a display indicating that if you continue shooting as is, shooting will be performed without exposure compensation.

[Step 13] Auto bracket stage number register R
'Put the contents of GAEB into the register RGAEBD for displaying the number of auto bracket stages. This step has meaning when auto-bracket photography is being performed, but if auto-bracket mode is not set, the contents of each register are ro OOJ, so this step has no particular meaning.

[Step 14] It is determined whether the content of the register RGAEBH for the number of times of auto-bracketing shooting is "3". Auto bracketing mode is not set here.
Since RGAEBN=OJ, the process advances to step 15.

[Step 15] Determine whether the contents of the register RGAEBH are rOJ. Here, as described above, since rRGAEBN=OJ, the process proceeds to step 16. In addition, during auto bracket shooting, the register RGAE
If the content of BH is “2” or “1”, step 16~
The program proceeds to step 20 without going through the program for changing the exposure compensation value in step 19. This is because the photographer may be confused if the exposure compensation value is changed during auto bracket shooting (details) (described later).

[Step 16: Read the level of the input port PA12 and determine whether the exposure compensation setting switch s w COMP is on. If it is turned on, proceed to step 17; if it is turned off, proceed to step 20.
Proceed to.

The case where the exposure correction setting switch swcOMP is on and the process proceeds to step 17 will be described below.

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

r Information reading routine j [Step 90] Store the information input to the input ports PH0 to PH3 in the dial register RGH.

This poetic language register RGH stores a numerical value corresponding to the number of clicks on the dial 5 and information as to whether the numerical value is positive or negative depending on the direction of rotation of the dial 5. In other words, how many steps to shift up or down from the current information?
Bit information will be stored.

[Step 91: Output the pulse signal of the output boat PE3. As a result, the dial interface circuit D
The value of IF is reset to zero.

[Step 92] Return to the original step.

Returning again to the flowchart in FIG.

[°Step 18 Exposure compensation value register RGCOM
The value set by the dial operation (the contents of the dial register RGH) is added to P, and the register RG is added again.
Store it in COMP and use it as a new exposure compensation value. In this embodiment, as shown in FIGS. 10(a) and 10(b), the register RGCOMP has a data length of 5 bits, and the register RGH has a data length of 4 bits.
If you use a method such as adding "0" to the upper part of the bit to make 5-bit data, it can be added without any problem. The same applies to operations between registers having different bit lengths.

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

Suppose that in step 17 above, the dial register R
Assuming that data called rooolJ is stored in GH,
rRGc in step 18;

MP=OOOOIJ, and in step 19 rR
GcOMPD=oooo IJ. The exposure compensation value +0.5 is now set (Figure 10(a))
), the program returns to the start, proceeds through each of the above steps again, executes the same operation, and returns to step 12.
When the contents of the exposure compensation value display register RGCOMPD are output to the output port PCD, only the data output terminal D9 in the data converter DEC in the decoder CD becomes "
1” and driver DR9 selects segment 5EG60.
9 is turned on, the display on the display 5EG6 becomes as shown in FIG. 12(b). In other words, it is displayed that exposure compensation +0.5 steps has been set.

In step 16, the exposure compensation setting switch swcO is
If MP is off, proceed to step 20 as described above.
Proceed to.

[Step 20] The second stroke of the release button 1 is performed, and it is determined whether the on signal of the second stroke switch sw2 is input to the input boat FAI. Assuming that the ON signal of the money measure 2-stroke switch SW2 is not input, the process returns to the start. Further, while the ON signal of the first stroke switch swl is manually input, calculation information can be obtained from the subject brightness information, film sensitivity information, and setting information by this routine, and these information can be displayed.

Further, if the aperture priority mode is set, the process proceeds from step 5 to step 21 to step 22.

[Step 22] Aperture information register RG stores information set by operating dial 5 and aperture value setting switch swM from the contents of register RGEv.
The contents of Av are 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 such as F5.6 is initially set.

[Step 23] The contents of the auto-bracketing stage number register RGAEB, which stores the auto-bracketing stage number information, are stored in the shutter bracketing stage number register RGBTv. Also, register RGBAv for the number of aperture bracket stages.
Set the contents to zero.

Thereafter, in the aperture priority mode, the same sequence as in the shutter priority mode is performed, and the aperture value set in step 11 is displayed on the display 5EG5, and the shutter speed calculated by the calculation is displayed on the display 5EG1, respectively. Is displayed.

If the manual exposure mode is set, the process goes from step 5 to step 21 to step 24.

[Step 24] The contents of the register RGTM storing the shutter speed information set by operating the dial 5 are stored in the shutter information register RGTv.

This is because when auto bracketing mode is set in manual exposure mode, the contents of the register RGTv change each time a shot is taken, so the information set by operating dial 5 needs to be stored as is. will be described later.

After that, the same sequence as in the aperture priority mode is followed, and the aperture value set in step 11 is displayed on the display 5EG5.
The set shirt time is displayed on the display 5EGI.

Next, we will describe information setting by dial operation while the photometry timer is operating. When the pressing of the release button 1 (first stroke) is stopped during the above-described sequence, the off signal of the first stroke switch swl is input, and the program proceeds from step 1 to step 25.

[Step 25] Read the level of the input boat PA12 and determine whether the exposure compensation setting switch swcOMP is on. If the result is on, step 2
The process then proceeds to the photometry/calculation/display routine described above.

That is, according to this embodiment, the camera displays the shutter speed and aperture value based on the photometric value even when the exposure compensation setting member is operated. On the other hand, if the exposure correction setting switch swcOMP remains off, the program proceeds to step 26 and enters an information setting routine by dial operation while the photometry timer is operating.

[Step 26] It is determined whether the switch cover 6 has been opened or not based on the state of the switch 5w5ET. Assuming that the switch lid 6 remains closed, the input port PA9
Since the off signal of the switch 5w5ET is input to the step 27, the process advances to step 27.

[Step 27] It is determined whether the photometry timer is in operation. Since this is immediately after the photometry timer has been activated in step 2, the process advances to step 28.

[Step 28] It is determined whether the shutter priority mode is set based on the input states of the input ports PPO and PPI. If the shutter priority mode is currently set, the process advances to step 29.

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

[Step 30] Add the numerical value set by dial operation (contents of register RGH) and shutter time information (contents of register RGTv), and store the result again in shutter information register RGTv. Also, the contents of the shutter information register RGTv are stored in the register RGTM.

[Step 31] It is determined whether a certain code indicating a valve mode located next to the longest second of the shutter speed is stored in the register RGTM. If we are not currently in valve mode, we jump to NEXTl, that is, step 3.

While the photometry timer is operating after the press of the release button 1 (first stroke) is stopped in this way, the setting information can be changed by operating the dial 5, and then the routine from step 3 described above can be changed. By executing this, the aperture value and shutter speed time are displayed on the display 5EGI in step 11.
, 5EG5, respectively.

Further, if the aperture priority mode is set, the process proceeds to steps 28-32-33.

[Step 33] Here, as in step 29, an information reading routine associated with the operation of the dial 5 is executed.

[Step 34] The numerical value set by the dial operation (the contents of register RGH) and the aperture value information (the contents of register RG
Av contents) and register RG for aperture information again.
Store it in Av. Also, in aperture priority mode, NEX
The aperture value and the shutter speed can be displayed on the displays 5EGI and 5EG5, respectively, in step 11, as in the shutter speed priority mode.

If the manual exposure mode is set, the process proceeds to steps 28-32-35.

[Step 35] It is determined whether the aperture value setting switch swM is on or off. In manual exposure mode, the aperture value can be changed by operating the aperture value setting switch swM and dial operation, and the shutter speed can be changed by operating only the dial. When the switch swM is on, the routine proceeds to the same routine (step 33) as in the aperture priority mode, and when it is off, the routine proceeds to the same routine as in the shutter priority mode (step 29).

When a predetermined period of time has elapsed after the suppression operation of the release button 1 was stopped, the photometry timer operation ends.

Along with this, the program changes from step 27 to step 3.
Proceed to 6.

[Step 36] Output boats PTD, PFL.

PAEB, PME, PFD, PBD, PCD output “
O” and display 5EGI to 5EG6 (however, display 5
EG2 does not exist) is turned off. Also, the output of the output port PF is set to °゛O'°, and the transistor T
Rbat is turned off to stop the supply of power supply Vcc.

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

The program then jumps to the start.

Therefore, after the photometry timer ends, Step 1 - Step 2
5→Step 26-Step 27-Step 36-Step 37 standby mode is repeated.

Next, a description will be given of the time when the auto bracketing mode is set. First, a case will be described in which only the opening operation of the switch cover 6 is performed to set the auto bracketing mode. When the switch cover 6 is opened, the switch 5w5
ET is turned on, and this on signal is input to input port PA9. The program then proceeds from step 26 to step 38.

[Step 38] Auto bracket switch SwAE
Perform the determination of B. Since the switch lid 6 has just been opened and the auto bracket switch 5WAEB has not been operated, the process advances to step 39.

[Step 39] The multiplex photographing switch swME is determined. Similarly, since the multiplex photographing switch swME has not been operated, the process advances to step 40.

[Step 40] A flag FsME indicating whether or not the multiple shooting switch swME has been pressed is determined. In the initial loading state of the battery BAT and in the ON state of the first stroke switch swl, the flag FsME is reset to 0 in step IO, so step 41
Proceed to.

[Step 41] Auto bracket switch SwAE
A flag FsAB indicating whether or not the pressing operation B has been performed is determined. As in the case of step 40, since the flag FsAB has been reset to 0 in step IO, the process jumps to step 27.

If the switch cover 6 is opened in this way and only the ON signal of the switch 5WSET is input, nothing is executed.

Next, from the above state, turn on the auto bracket switch swAE.
A case will be described in which the pressing operation B is performed once. When the auto bracketing switch swAEB is pressed, an on signal is input to the input port PALL. The program then proceeds from step 38 to step 42.

[Step 42] It is determined whether the contents of the register RGTM indicate the valve mode. If it is in valve mode, it will return to the start and will not enter auto bracket mode.

If the valve mode is not set, proceed to step 43.

[Step 43] Auto bracket switch swAE
A flag FsAB indicating that B is turned on is set to 1, and a flag FsME indicating that the multiplex shooting switch 6wME is on is reset to O.

[Step 44] Output boats PTD, PFL.

The output of PABR, PME, PFD, PBD, PCD is “
0" and all the displays on the displays 5EGI to 5EG6 are turned off. Next, only the output of the output boat PAEB is set to "1" and the auto bracket mark on the display 5EG3 is lit.

[Step 451: Set flag FAEB to 1, indicating that auto bracketing mode has been set.

[Step 46] Similar to 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, if the auto bracket stage number information rO,5 is set using the dial 5, for example, r-0,5,O, +0.5
If "1" is set in the number of stages of J, r-1,0
, lJ, the exposure is automatically changed in steps of 3 preset auto-bracketing shots. Note that shooting with the steps of r-0, 5, O, +0.54 refers to an exposure value that is 0.5 steps under the standard exposure value calculated by calculation, a standard exposure value, and a standard exposure. Exposure value that is 0.5 stops over the value, 3
This means that images are taken continuously using different exposure values.

[Step 47] Determine whether the content of the register RGAEBN for the number of auto bracket shots is "3" or not, and set rRG.
If AEBN=3J, proceed to step 50, and rRGA
If EBN≠3, the process advances to step 48.

"Step 48" Determine whether the contents of the register RGAEBH are "0" or not. If rRGAEBN=O", proceed to step 50; if rRGAEBN≠O, proceed to step 49.

[Step 49] If this step is passed, the contents of register RGAEBN are "2" or "1" according to steps 47 and 48 described above (register RGAEB
The contents of H can only take values from 0 to 3).

The value stored in the register RGAEBH is rRG.
AEBN = 3'' indicates that auto bracketing has been set and none of the 3 predetermined auto bracket shots have been taken, and rRGAEBN = 2'' indicates that the first of the 3 predetermined shots has been taken. This shows a state in which one image has been taken and two more images remain to be taken. Also rRGA
When EBN=IJ, it indicates that two out of three predetermined images have been taken and the last one remains, and rRGA
When EBN=OJ, it indicates immediately after all three predetermined auto-bracketing shots have been completed, or if there is no setting for auto-bracketing shots. Therefore register RGAEB
If the content of H is "2" or "1", it means that auto bracket shooting has finished for only one or two of the three images, and is still in the middle of auto bracket shooting. Accepting a new dial operation to change the number of auto bracketing steps may confuse the photographer, and it is necessary to prohibit this. Therefore, in this step, the contents of the dial register RGH in which the dial input value is stored are cleared to "0". This prohibits the contents of the auto-bracketing stage number register RGAEB from being updated in the next step 50.

[Step 50 Auto bracket stage number register R
Add the contents of GAEB and the contents of the dial register,
It is stored in register RGAEB again. As mentioned above, the minimum resolution by one click of the dial 5 can be freely set in increments of 0.5 steps or in increments of 1.0 steps. If the resolution is different from the resolution of the shutter speed and aperture value, it is sufficient to insert a program that multiplies the contents of the register RGAEB by an integer, and since this is not relevant to the present invention, a detailed explanation will be omitted.

[Step 51] Auto bracket stage number register R
The contents of GAEB are stored in the auto bracket stage number display register RGAEBD. Also, register RG for exposure compensation value
The contents of COMP are stored in register RGCOM for displaying exposure compensation value.
Store in PD.

[Step 52] Output the contents of the register RGAEBD from the output port PBD, and output the contents of the register RGAEBD to the register RGCOM.
Output the contents of the PD from the output boat PCD. As a result, the auto bracket mode setting is displayed on the displays 5EG5 and 5EG6.

That is, the display 5EG5 displays, for example, a numerical value ro, 5J, which indicates the number of stages. The decoder CD and display 5EG5 used at this time are also used to display the aperture, and the aperture value is decoded from the apex value Av to the F number number, and the auto bracket stage number is decoded from, for example, 0. Since it is a value for every 5 steps, it is necessary to change or switch the decoded content, but the reason why it is necessary to display the auto bracket step number on display 5EG5 is to set the auto bracket step number, which is the flow from step 38 described above. mode, in which case step 4
At rDISP 0FFJ of 4, the shutter speed and aperture value display are turned off, and it can be considered that a blank code is output from the output boat PFD to the decoder FD. Therefore, the configuration of the decoder FD is the output port PFD.
If data such as aperture value display is output from , it is decoded with priority and displayed on display 5EG5, and when the output content from output boat PFD is blank display, the auto output from output boat PBD is If the auto-bracketing stage number is displayed based on the bracketing stage number information, it becomes possible to display an appropriate numerical value.

On the other hand, the output boat PB is displayed on the display 5EG6 as mentioned above.
Information on the number of auto-bracketing stages outputted from D and exposure correction information outputted from the output port PCI 15 are displayed. As an example of the display when auto bracketing is set, if the exposure compensation is "0", rooooOJ is sent to the data input terminals C4-CO, and if the number of auto bracketing steps is "rl, 0", it is sent to the data input terminals A2-AO. ro
The data converter DEC in the decoder CD to which the data "10" is input via the output ports PCD and PBD outputs the data from the data output terminal D6.10 corresponding to the input. D8. DIO “
1” and the others as “0°°,” the driver DR6,
DR8DRIO lights up segments SEG606, 5EG608 and 5EG610 in the display 5EG6, respectively. As a result, the display state as shown in Fig. 12(c) is displayed, and the set auto bracketing is 11 stops under the appropriate exposure calculated from the photometric value, correct without correction), and +1 stop over. At a glance, you can see that three photos will be taken.

If the number of auto bracketing stages is the same rl and OJ, and exposure compensation r +Q, 5J is set, the data input terminals A2 to AO will have the same data (roloJ), and the data input terminals C4 to CO will have the same data as rooo.

1'' are input via PBD and PCD, respectively, so the data conversion unit DEC in the decoder CD outputs the data output terminals D7D9 . Dll “1”
” and the others are “0”, the drivers DR7 and DR
9, DRI 1 is segment 5EG in display 5EGB
607,5EG609.5EG611 are displayed by lighting. As a result, the display state as shown in FIG. 12(d) is displayed, and the set auto bracket shooting is -0.5 steps under, +O, S steps over, +1. At a glance, you can see that three photos will be taken, five steps over.

After such a display is made, the program returns to step 5.
Proceed to step 3.

[Step 53] It is determined whether the contents of the register RGAEBN for the number of auto-bracketing shots described above are "0". If the result is other than "0", the auto bracket mode has already been set or auto bracket shooting is in progress, so the program jumps to the start without doing anything in particular. If rRGAEBN=OJ, this means that an action to newly set the auto bracket mode has been made. In this case, the process advances to step 54.

[Step 54] Since auto bracket shooting has been newly set, register RG for the number of auto bracket shooting
The AEBN is set to "3" and it is memorized that three auto-bracket photographs will be taken from now on, and the process proceeds to step 55.

[Step 55] A flag FMH indicating whether the multiple shooting mode is set is determined. If you are not in multiple shooting mode, return to the start. If the multiple shooting mode is selected, the process advances to step 56.

[Step 56] Set the contents of the register RGMH for the number of multiple shots to "3". This is because the number of auto bracket shots is predetermined to be three, so even if the number of times for multiple shots is set arbitrarily, it is forced. This is to prevent the photographer from making operational mistakes and to eliminate the risk of erroneous exposure.

The program then returns to the start.

Furthermore, once the ON signal of the switch swAEB is input, the flag FsAB is set to 1 in step 43, so even if the OFF signal of the switch swAEB is input, the program continues from step 38 to step 39. 4o - Step 41 - Step 46 are followed, allowing the photographer to continue to maintain the auto bracketing stage number change mode with dial 5, and the photographer toggle switch s w A E B.
It becomes possible to operate the dial 5 while the pressing operation is stopped.

The auto bracket stage number change mode can be canceled by turning on the first stroke switch swl, turning on the exposure compensation switch swcOMP, or closing the switch lid 6 and turning off the switch 5w5ET. In other words, when the ON signal of the first stroke switch swl is input, the program progresses in the order of step 1 → step 2 → step 3 →..., and the ON signal of the exposure compensation switch s w COMP is input. Step 1 - Step 25 - Step 2 - Step 3 -
The program progresses, and each step is step 1.
When the flag FsAB is set to 0, the flag FsAB is reset to 0, and its display is also switched to a normal display at step 11. Also switch 5w
When the 5ET off signal is input, the auto bracket mark display disappears in step 36, and the flag FsAB is reset in step 37, and auto bracket starts again in the process of the program proceeding from step 26 to step 27 to step 36 to step 37. It does not proceed to stage number change mode.

Next, exposure calculation in auto bracketing mode will be explained.

In the case of shutter priority mode, as described in step 7, the contents of the register RGAEB for the number of auto bracketing steps are transferred to the register RGBAv for the number of aperture bracketing steps, and in the case of aperture priority mode and manual exposure mode, as described in step 23. Register for shutter bracket stage number RGBT
v, respectively. In step 8, since the auto bracketing mode is set and the flag FAEB is set to 1, the process advances to step 57.

[Step 57] It is determined whether the contents of the register RGAEB are zero. If the content is zero, photography will be performed three times with the same exposure (standard exposure in the embodiment), which is meaningless, so it is necessary to prohibit auto-bracket photography. Therefore, in this case, step 58
Proceed to.

[Step 58] The flag FAEB indicating auto bracketing mode is reset to O. Matade Capo-1-PAE
Set the output of B to “0” and turn off the auto bracket mark display.

[Step 59 Because auto bracket shooting is prohibited, the auto bracket shooting count register RGAEBH
Clear the contents to 0.

Next, by proceeding to step 9, the auto-bracketing exposure calculation is not performed, the flag FsAB is reset to O, and the normal routine is executed.

On the other hand, if the contents of the auto-bracketing step number register RGAEB are not zero in the step 57, it is necessary to perform exposure calculation and display of the auto-bracketing mark based on the step-number information, so the process proceeds to step 60.

[Step 60] Set the output of output boat PAEB to “1”
and display the auto bracket mark. This is because when the switch 5w5ET is turned off by closing the switch cover 6 from the auto bracket mode setting state, all the display is turned off in step 36, so if the first stroke switch swl is turned on, it is necessary to turn it on again. This is because there is.

[Step 61] It is determined whether the first stroke switch SW1 is turned on. If it is turned on, the process advances to step 62.

[Step 62] Transfer the contents of the shutter information register RGTv to the shutter information stack register RGTvS.
The contents of the aperture information register RGAv are respectively stored in the aperture information stack register RGAvS. This is because in auto bracket shooting, three shots are taken while changing the shutter speed or aperture value, but at this time, the microcomputer COM controls the camera and the shutter speed information or aperture value information before being changed is This is because it is necessary.

[Step 63] Since it has been confirmed that the first stroke switch sw1 is turned on in step 61, here the auto bracket stage number display register RGAEB is set.
Make the content of D roOOJ. This is to display that the first stroke switch swl is on during shooting in which the auto bracketing mode, which will be described later, is set.

[Steps 64 and 65] In both steps, the contents of the register RGAEBN for the number of auto bracket shots are set to "
3”, “2”, or “1”.

In other words, the next photo to be taken will be set to Auto Bracket Shooting Predetermined 3.
Determine which one of the sheets it is. If rRGAEBN=3
J In other words, the first one of the three predetermined shots for auto bracket shooting.
If a photo is to be taken, the process advances from step 64 to step 69.

In addition, if rRGAEBN=2J is used to capture the second image out of the predetermined three auto bracket images, step 64
- Step 65 - Step 68 and proceed.

If rRGAEBN=IJ is used to photograph the last one of the predetermined three images, the process proceeds from step 64 to step 65 to step 66.

First, a case will be described in which the content of the auto-bracketing number of shots register RGAEBH is "3".

[Step 69] As mentioned above, rRGAEBN=3
'', the process advances to this step, and the result obtained by subtracting the contents of the auto bracketing stage number register RGAEB from the contents of the exposure correction value register RGCOMP is stored in the exposure correction value display register RGCOMPD, and the process advances to step 70.

[Step 70] Add the contents of the aperture information register RGAv and the contents of the aperture bracket stage number register RGBAv, and store the result in the register RGAv again. Also, the contents of the shutter information register RGTv and the contents of the shutter bracket stage number register RGBTv are added and stored in the register RG T v again. This means that the aperture information calculated in the shutter priority mode and the shutter speed information calculated in the aperture priority mode are changed in accordance with the number of autobracket stages. That is step 50
If the auto-bracketing step number is set so as not to be a negative number at the point in time, the value after the calculation in step 70 will be an exposure value on the underside of the standard exposure value. In addition, in manual exposure mode, since step 23, which is the same as in aperture priority mode, is passed, the shutter speed is changed, and the aperture value is not changed as in conventional cameras, so only exposure with a constant depth of field is used. Auto-bracketing photography is now possible.

Next, register RGAE for the number of auto bracket shots
A case where the content of BH is "2" will be explained.

[Step 68] As mentioned above, rRGAEBN=2
'', the process advances to this step and stores the contents of the exposure compensation value register RGCOMP as they are in the exposure compensation value display register RGCOMPD.

Since the second shot is taken at the standard exposure value regardless of the number of auto bracket steps, the program continues to step 9 and onward without performing the shutter speed or aperture shift calculations that were performed in step 70. and proceed.

Next, register RGAE for the number of auto bracket shots
A case where the content of BN is rlJ will be explained.

[Step 66] As mentioned above, rRGAEBN=1
'', the process advances to this step, and the sum of the contents of the exposure correction value register RGCOMP and the contents of the auto bracket step number register RGAEB is stored in the exposure correction value display register RGCOMPD.

[Step 67] The content of the calibration information register RGAv is subtracted from the content of the aperture bracket stage number register RGBAv, and the result is stored in the register RGAv again. Also, the content of the shutter information register RGTv is subtracted from the content of the shutter bracket stage number register RGBTv, and the result is stored in the register RGTv again. This means that the aperture information calculated in the shutter priority mode is changed in accordance with the shutter speed information and the number of auto bracket stages calculated in the aperture priority mode. Here, contrary to the case of step 70 described above, the value after calculation becomes an exposure value that exceeds the standard exposure value by the number of autobracket steps.

Further, in step 61, the first stroke switch sw
If it is determined that l is turned off, the photometry timer is in operation, so the program proceeds through steps 71-72-9 in addition to steps 62-7o described above.

[Step 71] Similarly to 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 RGAvS.

[Step 72] Auto bracket stage number register R
The contents of GAEB are stored in the register RGAEBD for displaying the number of auto-bracketing stages, and the contents of the register RGCOMP for exposure compensation value are stored in the register RGCOMPD for displaying exposure compensation value.

Steps 62 to 70 and step 71 described above.
FIG. 13 shows an arrangement of the data stored in each register through each process according to the flowchart 72.

With the processing data shown in FIG. 13, as the program progresses further, in step 11, the display 5EGI displays the shutter time and the display 5EG5.
The aperture value is displayed, and in the following step 12, the exposure correction value and auto bracketing step value (step value) are displayed on the display 5EG6. An example of this display will be explained below.

Now, suppose the shutter priority mode is selected by the 2-luck exposure mode switch 5w5EL, the exposure compensation value is set to r-1, OJ, and the shutter speed is set to rl/1.
25 J is set, the aperture value r5.6J is determined by the calculation in step 6, and r is set as the number of auto bracket stages.
It is assumed that the OJ stage is set. The method of setting these setting values is as explained above. Under this assumption, from Fig. 10(a), the contents of the exposure compensation value register RGC○MP are rl 1110'', and from Fig. 10(b), the contents of the register R for auto bracketing step number are
The contents of GAEB are rolo,J. When the exposure compensation value is set to r-1, OJ and the number of auto bracketing steps is set to "1"
．． 0" step means that three photos are taken with the exposure amount changed in three steps: -2 steps under, -1 step under, and proper relative to the proper exposure.

What kind of display is performed in cases 1 to 6 shown in FIG. 13 will be described below.

In case 1, before taking the first of the three predetermined auto bracket shots, the contents of the exposure compensation display register RGCOMPD are rRGCOMP-RGAEB=
11100J, and the content of the autobracketing stage number display register RGAEBD is roOOJ, so when step 12 is executed, only the segment 5EG604 is lit on the display 5EG6 by the operation of the decoder CD described above. Furthermore, on the display 5EGI, r125J, which is the denominator of the shutter-second time in the seven-segment display, is r5, which is the standard exposure value for auto bracketing on the display 5EG5.
．． r8.6, which corresponds to the value one autobracket step under from "6". Since each OJ is displayed and the display 5EG3 is turned on in step 60, the display shown in FIG. 14(a) is performed as a total display. This display is displayed for a photographer who has already pressed the first stroke switch swl and is in the release standby state for the first shot of auto bracket shooting, but if the user continues to press the second stroke switch sw2 and performs the release operation described later. rl/125 J shutter speed and aperture value r8. This clearly shows that exposure is performed using a control value called OJ, and that the exposure amount is 12 steps under the appropriate exposure amount when neither exposure compensation nor auto bracketing is set.

In case 2, 2 of the 3 predetermined auto bracket shots
Before the second photograph is taken, the contents of the register RGCOMPD are equal to rRGcOMPJ, which is "11110," and the contents of the register RGAEBD for displaying the number of auto bracketing stages are roOOJ. Therefore, if step 12 is executed as in case 1, the decoder CD Due to this operation, only the segment SEG 606 is lit on the display 5EG6. Furthermore, on the display 5EGI, r125J, the denominator of the shutter speed second, is displayed in a seven-segment display as in case 1, and on the display 5EG5, "5.6", which is the standard exposure value for auto bracketing, is displayed. “1°°” from the output boat PAEB at 60
However, in step 101, which will be described later, "1" is output from the output boat PLF, so the display 5EG
3 blinks, and the display shown in FIG. 14(b) is performed as a total display. This display shows that if a photographer has already pressed down the first stroke switch swl and is in the release standby state for the second shot of auto bracketing, if he continues to press the second stroke switch sw2 and performs the release operation described later, the rl/rl/ Exposure was performed with a shutter speed of 125 J per second and an aperture value of r5.6 J, and the exposure amount was 11 stops below the appropriate exposure amount when there was no exposure compensation setting or auto bracketing setting. It clearly shows something.

In case 3, 3 of the 3 predetermined auto bracket shots
Before taking the second picture, the contents of register RGCOMPD are rRGcOMP+RGAEB=00000J,
Since the content of the autobracket stage number display register RGAEBD is roOOJ, when step 12 is executed, only the segment 5EG608 is lit on the display 5EG6 by the operation of the decoder CD. Furthermore, display 5EGI
In this case, r125J, which is the denominator of the shutter speed second, is the same as above, and r4. DJ is displayed, and "1" is outputted from the output boat PAEB in step 60, and "1" is outputted from the output boat PLF in step 101, which will be described later, so the display 5EG3 blinks and the total The display shown in FIG. 14(C) is performed as a display. This display shows that if a photographer who has already pressed the first stroke switch swl and is in the release standby state for the third auto bracket shooting, presses the second stroke switch sw2 and performs the release operation described later, 125'' shutter speed and aperture value r4. O
This clearly shows that exposure is performed using the control value J, and that the exposure amount matches the appropriate exposure amount calculated by the camera.

In case 1, when the first stroke switch swl is turned off, the photometry timer starts, and the process shifts to case 4.

Similarly, in case 2, the first stroke switch s
When l turns off, the light metering timer enters, and case 5 occurs.In case 3, when the first stroke switch swl turns off, the light metering timer enters and moves to case 6, respectively. 6 have almost the same display, so they will be explained together.

In cases 4, 5, and 6, the photographer releases the first stroke switch sw1 before taking the first, second, and third shots of auto bracketing, respectively, and the metering timer starts operating. In these cases, rRGcOMPD= l 1110J , rRG
Since AEBD=o 10J, when step 12 is executed, the three segments 5EG604, 5EG606, and 5EG608 of the display 5EG6 are lit and displayed by the operation of the decoder CD. In addition, the shutter speed information r125J is displayed on the display 5EGI, and the aperture value r5.6J, which is the standard exposure value for auto bracketing, is displayed on the display 5EG5.
are displayed respectively, and the display 5EG3 is also turned on in step 60, so the total display is as shown in FIG. 14(d). However, case 5. In case 6, the display 5E is
G3 becomes a blinking display. This display shows how the exposure distribution is set based on the exposure compensation value and the number of auto bracket steps, and the standard exposure for that setting for the photographer who leaves the shooting standby state by releasing the first stroke switch swl. This clearly shows what the shutter speed and aperture value are. Case 4.5.
In each of cases 6 and 6, the first stroke switch swl of the release button is always pressed when shooting, so calculations from step 62 onwards are performed, and the process returns to cases 1 and 2.3, respectively, which poses a problem for auto bracket shooting. If the auto bracket mode is not set and the exposure compensation is set, the display state of the display 5EG6 is as shown in FIG. 12(b), where the segment indicating the exposure compensation value is 5E.
When only one of G600 to SEG616 is selected and displayed, the first stroke switch s during auto bracket shooting shown in FIGS. 14(a) to (C)
The display state will be the same as when wl is pressed, but since the display 5EG3 lights up during auto bracket shooting to indicate that auto bracket shooting is being performed, the photographer will not be confused.

Next, a case will be described in which the valve mode is set by operating the dial 5 after the auto bracket mode is set.

Bracketing during bulb photography is basically meaningless, so it is more effective to cancel auto bracketing mode. Therefore, if it is determined in step 31 that the mode is the valve mode, the process proceeds to step 73.

[Step 73] Set the output of the output boat PAEB to “0”
and turn off the auto bracket mark. Also, reset the auto bracket mode flag FABR to O. Furthermore, register RG for the number of auto bracket shots
Clear the contents of AEBH to 0.

Next, a description will be given of when the multiple shooting mode is set.

The switch swM is activated in conjunction with the opening of the switch lid 6.
When the ON signal of E is input, the process proceeds from step 39 to step 74.

[Step 74] A flag FsME is set to 1, indicating that the multiplex photographing switch swME is turned on. Also, a flag FsAB indicating that the auto bracketing switch swAEB is turned on is reset to O.

[Step 75] Output boats PTD, PFL.

PAEB, PME, PFD, PBD, PCD output “
0" and turn off all displays. Next, output boat P
The output of only the ME is set to "1", and the multiple shooting mode mark is displayed on the display 5EG4.

[Step 76] Flag FME indicating multiple shooting mode
Set to 1.

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

[Step 78] Since the mode is auto bracketing, the number of multiple shots is forcibly set to three, as in step 56, that is, the contents of the register ROMH for the number of multiple shots are set to "
3".

If the auto bracketing mode is not set in step 77, the process advances to step 79.

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

[Step 80: Add the contents of the multiplex count register RGMH and the contents of the dial register RGH, and store the result in the register RGME again. Since the number of times of multiplexing is an integer, if the resolution of one click of the dial 5 is 0.5 steps, the contents of the dial register RGH are doubled and then added. It is also necessary to prevent the contents of the register RGH from becoming a negative number, but this is omitted here.

[Step 81] The contents of the multiplexing number register RGME are output from the output port PFD and displayed on the display 5EG5.

The program then returns to the start. Furthermore, once the ON signal of the switch swME is input, the flag FsME is set to 1 in step 74, so even if the OFF signal of the switch swME is inputted afterwards, the process from step 39 to step 4 is - The process proceeds to step 77, and it becomes possible to maintain the multiple shooting number setting mode. In addition, to shift from the auto bracketing stage number change mode to the multiplex shooting setting mode, it is enough to turn on the switch swME once, and to change the reverse, it is enough to turn on the switch swAEB once, as shown in Fig. 3. It should be obvious from the flow.

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

[Step 82: If the contents of the register RGMH for the number of multiple shots are zero, the process advances to step 83.

[Step 83] Flag FME indicating multiple shooting mode
Reset to O. Also, set the output of the output boat PME to “0”.
” to turn off the multiplex shooting mark display.

If the contents of the register RGME for the number of times of multiple photographing are not zero in step 82, the process advances to step 84.

[Step 84] Set the output of the output boat PME to "l" and display the multiple shooting mark. This is step 36
To turn off all the displays, press the release button 1 again.
This is to notify the photographer that the multiple shooting mode is active when a stroke is made.

As described above, the preparation stage for photographing is completed.

Next, the sequence after the second stroke of the release button I 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. 4.

[Step 100] It is determined from the state of flag FAEB whether or not auto bracketing mode is set. If it is auto bracket mode, go to step 101.
Otherwise, proceed to step 102.

[Step 1o1] Set the output of the output boat PFL to “1”
Then, the auto bracket mark is displayed blinking on the display 5EG3. This allows the photographer to reliably know that auto bracket photography has started.

[Step 102] It is determined whether the ON signal of the self-switch 5ELF is input to the input port PA6. If the ON signal is input, it means that the photographing is performed using the self-timer, so the process goes to step 1.3; otherwise, the process goes to step 104.

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

[Step 104] The contents of the aperture information register RGAv are output from the output port PA■. As a result, the aperture control drive circuit DAV converts the contents of the register RGAv into actual aperture information, and starts aperture control via the aperture drive actuator CAM such as a stepping motor.

[Step 105] A pulse signal is output from the output boat PEO, and the transistor TRO is turned on to energize the mirror-up magnet MGO, which is the first fixed combination magnet.

As a result, the mirror is raised by a known spring force.

[Step 106] It is determined whether an on signal of the switch sw MRUP for detecting the completion of mirror up is inputted to the input port PA2. Here, this loop is repeated until the on signal is input, that is, until the mirror is completely raised.

The process then proceeds to step 107.

[Step 1o7] Shutter information register RGTv
Since the content of is an apex value, it is converted (decompressed) into real-time data.

[Step 108] A pulse signal is output from the output boat PE1, and the transistor TRI is turned on to energize the shutter front curtain magnet MCI. This causes the shutter front curtain to run.

[Step 109] It is determined whether the contents of the register RGTM indicate the valve mode.

If the valve mode is set, the process proceeds to step 110; otherwise, the process proceeds to step 111.

[Step 110] Wait for the off signal of the second stroke switch SW2 to be input. This is because, since this is 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 it is not the valve mode, a real time count is performed using the data expanded in step 107, and the calculated shutter time is measured.

[Step 112] When the real time count ends, a pulse signal is output from the output boat PE2, and the transistor TR2 is turned on to energize the shutter trailing curtain magnet MG2. This causes the shutter trailing curtain to run.

[Step 113] It is determined whether the ON signal of the shutter trailing curtain switch 5wCN2 is input to the input port PA5. Here, this loop is repeated until the ON signal is input, that is, until the movement of the shutter trailing curtain is completed, and upon completion, the process proceeds to step 114.

[Step 114] The output of the output boat PAv is “0”.
”. This returns the diaphragm to its open state.

[Step 115] The output of the output boat PD is set to 'l', the transistor TR3 is turned on, and the charging motor MD for mirror down and shutter charging is rotated.

[Step 116] It is determined based on the state of flag FMH whether the multiple shooting mode is set. If it is the multiple shooting mode, the process proceeds to step 117; otherwise, the process proceeds to step 120.

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

[Step 118] It is determined whether the contents of the multiplexing number register RGME are zero. If it is zero, the process advances to step 119; if it is not zero, the process advances to step 121.

[Step 119] Since the content of the multiplexing number register RGME is O, it means that multiplex photography has ended, so the flag FME indicating the multiplex photography mode is reset to O. Also, the output of the output boat PME is set to "O" and the multiple shooting mark display is turned off.

[Step 120] Start a timer for film feeding. Also, the output of the output boat PB is set to "1", the transistor TR5 is turned on, and the film feeding motor MB is turned on.
Rotate.

If the multiplex shooting mode is continued, the contents of the multiplex number register RGME are not zero, so the process advances from step 118 to step 121, and since step 120 is not passed, no film feeding is performed. Therefore, multiple photography is performed. Furthermore, when multiple photography is completed, the contents of the register ROMH become zero, so film feeding is performed in step 120 after canceling the multiple photography mode as described above.

[Step 121] Determine whether or not the on signal of the charge completion detection switch swcGH is input to the input boat PA3.The on signal is not input.
In other words, if charging is not completed, the process proceeds to step 123, and if charging is completed, the process proceeds to step 122.

[Step 122] Since charging is completed, the output of the output boat PD is set to "0" and the power to the charging motor MD is cut off.

[Step 123] It is determined whether an on signal of the switch swFLM, which is turned on every time one frame of film has been fed, is input to the input boat 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] Determine the state of the film feeding timer. When the film is finished, no further film feeding is possible, so the switch swFLM is never turned on, and in such a case, the timer for film feeding, which is, for example, a one-second timer, finishes counting. When the time measurement is completed, proceed to step 150, otherwise proceed to step 1
21 and repeat the above sequence (steps 121-123).

[Step 125] In step 123, switch swF
When it is detected that the LM off signal has been input, the output of the output boat 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 the auto bracketing mode is set or not based on the state of the flag FAE'B. If not in auto bracketing mode, step 135
If so, proceed to step 127.

[Step 127] The contents of the shutter information stack register RGTvS are stored in the shutter information register RGTv. Similarly, the aperture value information stack register RGAv
The contents of S are stored in the aperture value information register RGAv. As a result, the register RGTv and the register RG
The shutter speed information and the aperture value information, which are the exposure amount of the standard exposure value before performing the bracket calculation, are respectively returned to Av.

[Step 128: "1" is subtracted from the contents of the register RGAEBH for the number of auto-bracketing shots, and the result is stored in the register RGAEBH again.

[Step 129] It is determined whether the contents of the register RGAEBH, from which "1" was subtracted in step 128 as described above, have become "0". If the content of this register RGAEBN is "0", it means that the predetermined three auto-bracketing shots have been completed, and the program proceeds to step 132; otherwise, the program proceeds to step 130.

[Step 130] It is determined whether the mode is continuous shooting mode or single shooting mode based on the on/off state of switch 5wC5 input to input boat PA7, and if it is continuous shooting mode, N is selected.
EXT3 (Step 8 in Fig. 3) Head back. In the case of single shooting mode, the process advances to step 131.

[Step 131] Wait for the off signal of the second stroke switch sw2 to be input. Since this is a single shooting mode, the photographer does not release the on state of the second stroke switch sw2 by loosening the pressure on the release button 1. It does not proceed to the next sequence until the end of the sequence. When the off signal is input, the program jumps to NEXT3.

Jumping from step 130 or 131 to NEXT 3 is during auto bracket shooting, and the predetermined 3
If auto bracketing has not yet been completed, the NE
By jumping to XT3, it is possible to calculate the exposure shift based on the number of auto bracket steps and move on to the next shooting without performing a new metering calculation, as explained in the above auto bracket calculation in steps 62 to 70. It is as follows.

In the step 129, the predetermined number 3 of auto bracketing shooting is performed.
If it is determined that all images have been taken, the process proceeds to step 132 as described above.

[Step 132] Output "0" from the output port PFL. As a result, the display 5EG3 stops blinking and becomes a normal lighting state.

[Step 133] Data "3" is set in the register RGAEBN for the number of auto-bracketing shots. This makes it possible to take three new auto-bracket shots.

[Step 134] Waiting for the off signal input from the second stroke switch sw2. Auto bracketing. Since the predetermined 3 shots have just been taken, the mode is set to single shooting mode or continuous shooting mode, which is set by switch 5wC5 connected to input boat PA7. In order to inform the photographer that the shooting has come to an end, the photographer cannot proceed to the next shooting unless he releases the pressure on the release button 1 and turns off the second stroke switch SW2. .

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

Next, a case where the auto bracket mode is not set will be described. In this case, since the flag FAEB is O, the process advances from step 126 to step 135.

[Step 135: Input Capo] Based on the on/off state of the switch 5wC5 input to PA7, it is determined whether the mode is a quick shooting mode or a single shooting mode. In the case of continuous shooting mode, the process returns to the start, and in this case, the release button 1 is pressed and the 1st. Since the ON signal of the second stroke switch swl, 2 has been input, the next photographing begins. If the mode is single shooting mode, the process advances to step 136.

[Step 136] Wait for the off signal of the second stroke switch sw2 to be input. Since this is the single shooting mode, the next shooting sequence will not proceed unless the photographer loosens the pressure on the release button L and turns off the second stroke switch SW2. When the off signal is input, the process returns to the start.

Next, we will discuss the case where the film ends during shooting. In this case, as mentioned above, the time measurement by the film timer, which is a one-second timer, for example, ends, so step 12
4, proceed to step 150.

[Step 150] The output of the output boat PC is set to "1", the transistor TR4 is turned on, and the rewind motor MC is rotated. This starts rewinding the film.

[Step 151] Start a rewind timer used to detect whether rewinding of the film has finished.

[Step 152] It is determined whether the state of the film switch swFLM has changed. If it has changed, the process returns to step 151 and the rewind timer is started again. If there is no change, proceed to step 153.

[Step 153] It is determined whether or not the time measurement by the rewind timer has ended. If the process has not ended, the process returns to step 152.

As can be seen from the above, step 152. The process proceeds through the loop of step 153, and when the completion of feeding of one frame is detected, the process proceeds from step 152 to step 151, and this loop is repeated when rewinding the film. After that, when all the film is wound into the cartridge, the sprocket stops rotating, and the state of the film switch swFLM no longer changes. If this is detected, the process proceeds to step 154.

[Step 154] The output of the output port PC is set to "O", the transistor TR4 is turned off, and the rewind motor MC is stopped. This completes the rewinding of the film.

[Step 155] A flag FAEB indicating auto bracketing mode is reset to 0. The contents of the register RGAEBN for the number of auto-bracketing shots are also cleared to "0". Further, the outputs of the output ports PAEB and PFL are both set to "0" to turn off the blinking display on the display 5EG3 (auto bracket mark).

[Step 156: The contents of the auto bracket stage number register RGAEB and the auto bracket stage number display register RGAEBD are both cleared to "OOO". Furthermore, the contents of the register RGAEBD are sent to the output port PB.
Output to D.

The program then returns to the start.

Also, during auto bracket shooting, in other words,
If you have to take a series of shots, but the film runs out midway through, step 1 after the 1st or 2nd frame.
It enters the routine after 50. In such cases, if auto bracketing continues with the newly loaded film, there is a risk that the subject may be different or the photographer may misunderstand, so at the same time, the photographer should be informed of this. It is desirable to cancel auto bracketing mode. Looking at this in the flowchart of FIG. 4, when the film ends after the auto-bracketing mark is flashed in step 101, the process automatically shifts to film rewinding. While this film rewinding is being executed, the flashing display of the auto bracket mark has not yet been canceled. Therefore, the auto bracket mark, which normally would not be displayed, is displayed during film rewinding, allowing the photographer to know that the film has ended before auto bracket shooting has finished completely. be able to.

In other words, this is the warning display. Also, in step 155, the flag FAEB indicating the auto bracketing mode is reset to 0, and the register RGAE for the number of auto bracketing shots is set.
Since the contents of BN are also cleared to rOJ, the inconvenience of continuing auto-bracket photography on newly loaded film as in conventional cameras is eliminated.

According to this embodiment, since the exposure compensation value information and the auto bracketing step number information are displayed on the same bar graph display and using the same segment, if you try to set the auto bracketing In addition, it is possible to display information that is easy to understand at a glance, even in the case of one-sided settings or center value shift settings combined with exposure compensation value information, and it is also possible to make settings that are different from the intended ones without realizing that exposure compensation has been done in advance. The possibility of this happening can be significantly reduced compared to the conventional method.

(Correspondence between the invention and the embodiments) In this embodiment, the exposure compensation setting section 103 and the information input section 106 serve as the exposure compensation value setting means of the present invention, and the auto-bracketing setting section 108 and the information input section 106 serve as the auto-bracketing step number setting means. In addition, the exposure correction value storage section 107 is used as a first storage means, the auto bracket step number storage section 109 is used as a second storage means, the display 105 is used as a display means, and the control section 101
correspond to display control means, respectively. Also, display section 105
a corresponds to a display section, and index section 105b corresponds to an index section.

(Effects of the Invention) As explained above, according to the present invention, the display section arranged in a bar graph shape commonly used for displaying exposure compensation value information and auto bracketing step number information, and each of the plurality of display sections. A display means facing the display means having an index section indicating a position indicating an appropriate exposure amount and a position indicating an underexposure compensation amount and an overexposure compensation amount relative to this, and during auto bracketing,
The display means is provided with a display control means for displaying all the auto-bracketing step number information stored in the second storage means in combination with the current exposure correction value information stored in the first storage means, Therefore, since the exposure compensation value information and all the auto bracketing step number information are displayed on one display means, the exposure compensation value information and the auto bracketing step number information including the set number of auto bracketing shots can be displayed at a glance. This makes it possible to confirm the information, thereby preventing incorrect information from being set.

[Brief explanation of the drawing]

FIG. 1(a) is a block diagram showing an embodiment of the present invention, FIG. 1(b) is a flowchart thereof, and FIG. 2 is a built-in camera in which the embodiment shown in FIG. 1 is embodied. 3 to 5 are flowcharts, FIG. 6 is a front view of the camera, FIG. 7 is a top view, and FIG. 8 is a back view. FIG. 9 shows the decoder CD and display 5EG shown in the second diagram.
6, FIGS. 10(a) and 10(b) are diagrams showing data examples of the exposure compensation value and the number of auto-bracketing steps in an embodiment of the present invention, and FIG. 11 is the data conversion unit shown in FIG. 9. Circuit diagram showing an example of a DEC configuration, FIG. 12(a) ~
(d) is a diagram showing display examples in each state on the graphical display 5EG6 in FIG. 9, FIG. 13 is a diagram summarizing the processing results in each case in an embodiment of the present invention, and FIG. )～(d
) are the graphical displays 5EGI, 5EG3, 5EG5,
It is a figure which shows the example of a display in each state in 5EG6. 1... Release button, 4... Exposure mode selection knob, 5... Dial, swAEB...
...Auto bracket switch, s w COM
P...Exposure compensation setting switch, 5EG3~5
EG6... Display unit, SPC... Light receiving element, OPl... Operational amplifier, Dl...
Compression diode, COM...Microcomputer, CD, AD-, FD...Decoder, DI
F...Dial interface circuit, 101
...Control section, 103...Exposure compensation setting section, 105...Display device, 107...Exposure compensation value storage section, 108... - Auto bracket setting section, 109...Auto bracket stage number storage section.

Claims (1)

[Claims] (1) Exposure compensation value setting means for setting exposure compensation value information, auto bracketing step number setting means for setting auto bracketing step number information, and a first device for storing exposure compensation value information set by the exposure compensation value setting means. and a second storage means for storing the auto bracketing step number information set by the auto bracketing step number setting means, in the camera with an auto bracketing function, the exposure compensation value information and the auto bracketing step number information are displayed. A commonly used display section arranged in the form of a bar graph, and an indicator section facing each of the plurality of display sections that indicates a position indicating an appropriate exposure amount and a position indicating an underexposure compensation amount and an overexposure compensation amount relative to this. and during auto bracketing, the display means displays the number of auto bracket steps stored in the second storage means in combination with the current exposure correction value information stored in the first storage means. A camera with an auto-bracketing function, characterized in that it is provided with a display control means for displaying all information.