JPS63208027A - Camera - Google Patents

Abstract

PURPOSE:To facilitate a photographing operation and to permit dealing with a rapid change in the illuminance distribution of a subject by providing control means for executing automatic self-timer photographing by exposing at the center as well as upper and lower limit values of an exposure correction value. CONSTITUTION:Conditions are so set in a CPU 18 that 3 kinds of exposing; upper limit, center and lower limits of the correction width set by a correction width setting means constituted of a setting plate 5, a contact piece 5c and a coded pattern 5d can be controlled. Photographing is, therefore, so controlled as to be made at the exposure value of the upper limit of the correction width from the center of the exposure correction value set by the exposure correction setting means constituted of a dial 4, a contact piece 4b and a coded pattern 4c by a release signal, then at the exposure value of the center of the exposure correction value and at the exposure value of the lower limit of the exposure correction value for the third picture. The quick self-timer photographing at the different photometric values is thus quickly executed by the simple operation.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to the field of cameras.

(Prior Art) When photographing a subject, consideration is given to what exposure should be applied to which part of the screen to be photographed, depending on the photographer's intention. Therefore, mechanisms such as average photometry, spot photometry, and exposure compensation have been put into practical use in the past.

(Problems to be solved by the invention) However, these mechanisms are complicated in terms of photographing operations;
It wasn't something to be satisfied with. Furthermore, when the self-timer is used, the shutter is normally activated after a delay time of about 7 seconds, so there are cases where the subject cannot be photographed in the intended state due to sudden changes in the subject illuminance distribution.

(Means for solving the problem) Above! In view of the IS situation, the inventor of the present invention has developed a Δ-prior circuit, an exposure compensation setting means, an exposure compensation range setting means, and a control for automatic self-timer shooting at exposures at the center and upper and lower limit values of the exposure compensation value. The problem was solved by providing a camera equipped with means.

(Example) The present invention will be described in detail below with reference to one drawing. FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram of the device of the present invention.

In FIG. 1, on the finder force 8-1.

A photometry mode switching lever 2 is arranged so as to be rotatable around the outer periphery of the release button 3. The metering mode switching lever 2 is rotated counterclockwise from the power off position shown in the diagram, and click-stopped to the average metering, spot metering, and AE lock positions.
, is configured so that it can be downloaded.

A dial 4 is rotatably arranged around the outer periphery of the nameplate 5 near the warship part of the finder cover 1 that houses the pentaprism, and the dial 4 adjusts the exposure compensation value by adjusting its indicator 4a to the exposure compensation value on the nameplate 35. Value can be set.

On the same axis as dial 4, below dial 4 is setting plate 5.
is arranged to be rotatable by a knob 5a, and by aligning the index 5b of the setting plate 5 with the AV scale on the finder cover 1, the exposure correction range can be set.

A conversion knob 6 is disposed near the photometry mode switching lever 2 so as to be movable left and right, and a mode conversion button 7 or an ISO conversion button 8 is provided on the left hand side of the finder cover 1.
When the conversion knob 6 is moved left or right while pressing , the shooting mode or ISO value is converted and displayed on the display window 9.

A rewind knob 10 is disposed in the left rotation section along with the conversion knob 6, and when the button 11 is pressed and the rewind knob 10 is moved to the left, the film is rewound.

A dial 12 is rotatably disposed on the left hand side of the finder cover 1, and allows switching between S (-frame), continuous (C), and self-timer (ST) shooting modes.

In FIG. 2, the photometry element 13 is composed of a plurality of elements, and inputs light information of average photometry and spot photometry to the photometry IC 14. The optical information is A-D converted by an A-D conversion circuit 15 and input to a digital circuit 16 . On the other hand, the exposure compensation setting means includes a dial 4, a contact piece 4b and a coded pattern 4C.
The correction width setting means is composed of a setting plate 5, a contact piece 5C, and a coding pattern 5d, each of which is input to the digital circuit 16.

Further, the aperture information setting means 17 is constituted by a contact piece 17a and a coded pattern 17b, and inputs aperture information to the digital circuit 16.

The digital circuit 16 calculates light information, exposure correction information, correction width information, and aperture information and inputs them to the CPU 18.

A release switch 3b is disposed directly below the release button 3, and when the release button 3 is pressed, the end 3a turns on the release switch 3b, so the digital circuit 16
An initial signal is sent.

A motor drive circuit 19 is connected to the output end of the CPU 18, and synchronizes with the initial signal of the release switch 3b.
The cputa drives the motor 20 in the forward direction. Due to this forward drive, the mirror of the single-lens reflex camera (not shown) is raised, the aperture mechanism is locked to a predetermined aperture, the shutter is opened and closed after the mirror is raised, the motor 20 is reversely driven, and the camera mechanisms are returned to their initial positions. .

The CPU 18 is equipped with a condition so as to be able to control three types of exposure: the upper limit, center, and lower limit of the correction width set by the correction width setting means. Therefore, the release signal is used to take a picture from the center of the exposure compensation value set by the exposure compensation setting means to the upper limit exposure of the compensation width (/i, and then the picture is taken with the exposure value at the center of the exposure compensation value, and then the third exposure is taken. controls the camera to shoot at the lowest exposure value of the exposure compensation value.

The photometry mode switching means is a photometry switching lever 2. contact piece 2b,
Consisting of coding pattern 2C, off in Figure 2
By rotating the photometry switching lever 2 counterclockwise from the position, mode information of average photometry, spot photometry, and AE lock is input to the digital circuit 16 and CPU 18.

At this time, when set to the average photometry position, the power switch circuit 21 is activated and supplies power E to each part of the circuit.

The CPU 18 also has a magnet M1 that fixes the aperture.
A transistor 22. A transistor 23 that controls the shutter opening magnet M2, a switch 24, 25 connected to the conversion knob 6, a switch 26 connected to the rewind knob 10, a switch 27 that detects the completion of the mirror raising and stops the motor 20, and a switch 27 that detects the completion of the shutter opening. Switch 28 for sensing and reversing motor 20. A switch 29 that detects the completion of shutter setting, a switch 30 that connects to the mode conversion button 7, a switch 31 that connects to the ISO conversion button 8, a switch 32 that closes during continuous shooting, a switch 33 that closes once the self-timer , - A switch 36 that is closed when photographing a frame, and a display section 34 that displays information on the display window 9 are connected. A timer display section 35 is connected to the display section 34, and displays a timer display section 35 which displays the time when the self-timer is activated, and the display section 35 is disposed on the outer surface of the camera body (not shown) so that it can be viewed by the person being photographed.

Switches 24 and 25 connected to the conversion knob 6 constitute up/down switches, and when the mode conversion switch 30 is closed and the switch 24 is turned on or off, the modes are switched to shutter priority, aperture priority, program, manual, etc. When the ISO conversion switch 31 is closed and the switch 24 is turned on and off, the ISO conversion is performed. Switch 25 is converted in the opposite order as switch 24. They are displayed on the display section 34 and visually recognized through the display window 9.

The number of shots is displayed in the lower right part 9a of the display window 9.01.02.03-
It is displayed with two characters like Φ・36, and if the correction width setting means is set to a value other than O, shooting will be repeated in the order of upper limit, center, and lower limit, but the number O on the left will change depending on the shooting of one frame [1]. The two characters 02 are deducted when the third image is taken, and the number 3 on the right is deducted when the third image is taken, and a warning is displayed that the correction width is being set.

Next, the photographing operation of the present invention configured as described above will be explained with reference to FIG.

(b) When the exposure compensation setting means and the exposure width setting means are set to O, the photometry value of the photometry IC 14 is properly calculated by the CPU 18 (104), and the release switch 3b is turned on.
(107), it is determined whether the mode is self mode (108), and if it is not the self mode, the shutter is operated for proper exposure (109), and the film is wound (110).
will be held. In self mode, release switch 3
When b is turned on (107), a self-start signal is sent out (111), photometry (102), and proper calculation (104) are performed.
), it is determined whether the self-delay time has elapsed for 10 seconds (105), and if 10 seconds have not elapsed, it is determined whether the self-start signal has been issued (106).
), if a self-start signal has been issued, it is determined whether 10 seconds have elapsed 112), and if 10 seconds have elapsed, a self-start 10 second elapsed signal is output 113), photometry (1
02), After the proper calculation (104), it is determined whether the self 10 second elapsed signal is output 105).If the 10 second elapsed signal is output, the shutter operation for proper exposure (109) and the film winding operation (110) are performed. ), the self-start signal is cleared (114).

(b) Set the exposure width setting means to tEV (t≠0, EV=Ex
pose Value), continuous correction mode is set.

Now, when the exposure compensation setting means is set to uEV, first after photometry (102), it is determined whether continuous compensation is required (10
3) If continuous correction mode is set, J! In the Ii continuous correction mode, it is determined whether or not the first image falls under 8 (115), and if it is the first image, it is overcalculated (1
16), if the appropriate exposure is sEV, then with the release switch on (107), sEV+uEV+tEV
Photographed at. After opening the shutter, film winding operation (
tio), after self-start signal clear (114),
It is judged again whether it is continuous correction (117), +1 is recorded in the continuous correction counter (118), and then,
It is necessary to judge whether or not the third image has been taken (119), and if the three images have not been completed, the photometry is carried out again (102), the continuous correction (103) is carried out, and the judgment is made whether or not it is the second image (120), and the appropriate calculation (120) is carried out.
104) is performed, and with the release switch on as a condition (
107), the second photograph is taken with SEV+uEV. After that, record +2 (118), metering (102)
, (115), and (120), the under side operation (i
21), and the third shot is taken with sEV + uEV - tEV. When the continuous correction counter records +3, the third shot is completed (119), and the selfie 10 seconds elapsed set is cleared (122), and the next shot is taken. Preparation is complete.

When the dial 12 is set to self mode (ST) and the release switch 3b is turned on (107), it is determined whether the mode is self mode (108), the self start state is set (111), and then photometry (102) is performed. ), and continuous correction applies to the first shot (115)
It is calculated on the over side (116) and it is determined whether the self delay time has elapsed (105), and if it has not elapsed, it is determined whether or not the self has started (106). If so, it is determined whether 10 seconds have elapsed (112), and when l·0 seconds have elapsed, a self-time 10 second elapse is set (113).

After 10 seconds of selfie (105), the first photo is sEV
Photographed with +uEV+tEV (109), film winding (1□lO), self-start cleared (114),
Since it is a continuous correction (117), record the number of sheets in the continuous correction counter + 1 (118), then the second sheet (120)
is calculated properly J'L (104), and when shooting with sEV+uEV, the continuous correction counter records +2 and the photometry (
After 102), the under side calculation is further performed (121), and the third image is photographed at sEV+tEV-tEV.

When the continuous correction counter records +3, it is determined that the third image has been completed (119), and the self-elapsed 10 seconds are cleared (1
22).

Furthermore, in the present invention, when the continuous shooting switch 32 is closed and the correction width setting means is set to a value other than 0, the release button 3
By suppressing , three images are taken in the order of the upper limit, center, and lower limit of the correction range, and the operation is stopped. Release button 3 again
If you press , three images will be taken again in the above order, and this will be repeated from now on.

When the dial 12 is set to still (S), each shot is taken in the above order each time the release button is pressed.

As configured as described above, when the metering switch lever 2 is operated, power is supplied to the circuit, both the exposure compensation setting means and the compensation width setting means are set to O, and a photograph is taken, the light is automatically metered. When a photograph is taken and the dial 12 is set to continuous photographing, the photograph is taken continuously for 'fM' while the release button 3 is pressed.

Set the exposure compensation setting means to O, and set the compensation width setting means to 0.
If you set it to 5, it will be 1. The first photo was taken at 0°5EV over, the third photo was taken at OEV, and the third photo was taken at 0.5EV.
Photographed underneath.

When the correction width setting means is set to 0.5 and the exposure compensation setting means is set to 1, the first shot is 1.

The third photo is taken at 5EV over, the third one is taken at IEV over, and the third one is taken at 0.5EV over.

When set to self mode, three images are taken in succession in the order of the upper, center, and lower limits of the correction range.

(Effect) +,++-4＞alsoIg'IIJ+】-11-Ichiban-Mr
It is possible to provide a camera that is capable of quickly performing self-timer photography at different photometric values in 111 consecutive works.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram of the device of the present invention, and FIG. 3 is a flowchart for explaining the operation of the device of the present invention.

Claims (1)

[Claims] A photometry circuit, an exposure compensation setting means for correcting the exposure value measured by the photometry circuit, and a correction width setting for setting the limit of the exposure compensation range for shooting based on the exposure value set by the exposure compensation setting means. and when in self mode, take the first picture at one limit of the correction width, take the second picture at the center of the correction width, and take three pictures at the other limit of the correction width. A camera equipped with a control means for automatically photographing the eyes.