JPS5570822A - Automatic exposure control unit - Google Patents
Automatic exposure control unitInfo
- Publication number
- JPS5570822A JPS5570822A JP14471578A JP14471578A JPS5570822A JP S5570822 A JPS5570822 A JP S5570822A JP 14471578 A JP14471578 A JP 14471578A JP 14471578 A JP14471578 A JP 14471578A JP S5570822 A JPS5570822 A JP S5570822A
- Authority
- JP
- Japan
- Prior art keywords
- freeze
- signal
- photometric value
- timer
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Exposure Control For Cameras (AREA)
Abstract
PURPOSE: To make easy the freeze photographing operation using a self-timer by storing the presence or absence of the freeze signal and controlling a photometric value storage memory according to the presence or absence signal.
CONSTITUTION: When a freeze switch is operated, a freeze signal is generated from a freeze signal circuit 14 and "freeze presence" is stored in a memory means 11. When a selftimer is set and a shutter release button is pushed, the storage content of the freeze signal presence of the means 11 is read out according to the release signal and a switch means 2 is turned OFF by way of a gate 10, thus the content of a photometric value storage memory 3 is fixed at the provious main subject photometric value. Hence, at the freeze photographing by the self-timer of a changed camera angle, exposure is controlled according to the previous photometric value evne if the mirror is kicked up by way or a delay circuit 21 and release control circuit 22 after the preset timer time. As a result of this, the freeze photographing using the self-timer may be accomplished by the simple operation of changing the camera angle by operating the release switch after the photometry.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14471578A JPS5570822A (en) | 1978-11-21 | 1978-11-21 | Automatic exposure control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14471578A JPS5570822A (en) | 1978-11-21 | 1978-11-21 | Automatic exposure control unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5570822A true JPS5570822A (en) | 1980-05-28 |
JPS6252289B2 JPS6252289B2 (en) | 1987-11-04 |
Family
ID=15368603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14471578A Granted JPS5570822A (en) | 1978-11-21 | 1978-11-21 | Automatic exposure control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5570822A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58215636A (en) * | 1982-06-09 | 1983-12-15 | Olympus Optical Co Ltd | Camera |
JPS58219539A (en) * | 1982-06-15 | 1983-12-21 | Olympus Optical Co Ltd | Camera |
JPS6235328A (en) * | 1985-08-09 | 1987-02-16 | Minolta Camera Co Ltd | Exposure controller for camera |
EP2136234A2 (en) | 2008-06-16 | 2009-12-23 | Olympus Corporation | Microscope imaging system, storage medium and exposure adjustment method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5050921A (en) * | 1973-09-04 | 1975-05-07 | ||
JPS5322738A (en) * | 1976-08-16 | 1978-03-02 | Yashica Co Ltd | Circuit for deciding time constant capacitor charging time of electric shutter |
-
1978
- 1978-11-21 JP JP14471578A patent/JPS5570822A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5050921A (en) * | 1973-09-04 | 1975-05-07 | ||
JPS5322738A (en) * | 1976-08-16 | 1978-03-02 | Yashica Co Ltd | Circuit for deciding time constant capacitor charging time of electric shutter |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58215636A (en) * | 1982-06-09 | 1983-12-15 | Olympus Optical Co Ltd | Camera |
JPH0514258B2 (en) * | 1982-06-09 | 1993-02-24 | Olympus Optical Co | |
JPS58219539A (en) * | 1982-06-15 | 1983-12-21 | Olympus Optical Co Ltd | Camera |
JPH0561620B2 (en) * | 1982-06-15 | 1993-09-06 | Olympus Optical Co | |
JPS6235328A (en) * | 1985-08-09 | 1987-02-16 | Minolta Camera Co Ltd | Exposure controller for camera |
EP2136234A2 (en) | 2008-06-16 | 2009-12-23 | Olympus Corporation | Microscope imaging system, storage medium and exposure adjustment method |
Also Published As
Publication number | Publication date |
---|---|
JPS6252289B2 (en) | 1987-11-04 |
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