JPS5638029A - Arithmetic circuit for camera - Google Patents
Arithmetic circuit for cameraInfo
- Publication number
- JPS5638029A JPS5638029A JP9800880A JP9800880A JPS5638029A JP S5638029 A JPS5638029 A JP S5638029A JP 9800880 A JP9800880 A JP 9800880A JP 9800880 A JP9800880 A JP 9800880A JP S5638029 A JPS5638029 A JP S5638029A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- exposure
- photographing
- value
- magic
- 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.)
- Pending
Links
Abstract
PURPOSE: To make possible the operation for magic photographing and make possible the predisplaying of the exposure factor value controlled before photographing by making sequence controlling of exposure arithmetic operation.
CONSTITUTION: In a single-lens reflex camera having a photometric circuit 1, a photographing information setting means 2, an operation decision setting circuit 3, a gate circuit 4, a sequence control circuit 5, a reference time generating circuit 6, an arithmetic unit 8, an operation result decision circuit 9 and a data memory device 10, the circuit 5 controls successively sequentially such plural execution steps as performing correct exposure operation based on subject luminance information and exposure value, deciding that the thus obtained exposure value is outside the threshold value range and performing correct exposure operation based on the threshold value and luminance information. And the exposure operation for the purpose of magic photographing is accomplished.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9800880A JPS5638029A (en) | 1980-07-16 | 1980-07-16 | Arithmetic circuit for camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9800880A JPS5638029A (en) | 1980-07-16 | 1980-07-16 | Arithmetic circuit for camera |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48080087A Division JPS5028831A (en) | 1973-07-16 | 1973-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5638029A true JPS5638029A (en) | 1981-04-13 |
Family
ID=14207698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9800880A Pending JPS5638029A (en) | 1980-07-16 | 1980-07-16 | Arithmetic circuit for camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5638029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157621A (en) * | 1983-02-28 | 1984-09-07 | Asahi Optical Co Ltd | Exposure control system and aperture value and shutter speed display system of multimode camera |
-
1980
- 1980-07-16 JP JP9800880A patent/JPS5638029A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157621A (en) * | 1983-02-28 | 1984-09-07 | Asahi Optical Co Ltd | Exposure control system and aperture value and shutter speed display system of multimode camera |
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