JPS5466837A - Automatic exposure control system - Google Patents
Automatic exposure control systemInfo
- Publication number
- JPS5466837A JPS5466837A JP13398777A JP13398777A JPS5466837A JP S5466837 A JPS5466837 A JP S5466837A JP 13398777 A JP13398777 A JP 13398777A JP 13398777 A JP13398777 A JP 13398777A JP S5466837 A JPS5466837 A JP S5466837A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- diaphragm
- blind
- film sensitivity
- information
- 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
Landscapes
- Exposure Control For Cameras (AREA)
Abstract
PURPOSE: To perform a program control in a simple and low cost manner by utilizing an electronic shutter.
CONSTITUTION: After the light of object incident onto photodetector 3 of photometric circuit 2 via the diaphrogm 1 of lens has been converted to electric signal, it is counted in arithmetic circuit 4 together with the diaphragm information from diaphragm information set circuit 5 whose resistor is changed with interlocked with preset ring 7 of the lens and with the film sensitivity information from film sensitivity information set circuit 6 whose resistor is changed by the rotation of film sensitivity dial. After the thus counted shutter speed information has been memorized in memory circuit 8, shutter control circuit 9 is so controlled that the second blind is made to travel by demagnetizing the blind magnet 10 after the lapse of a predetermined time since the travel of the first blind. Accordingly, the program control i spossible by adding a device which sets the diaphragm to the programmed value in response to the light amount in the diaphragm priority camera.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13398777A JPS5466837A (en) | 1977-11-08 | 1977-11-08 | Automatic exposure control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13398777A JPS5466837A (en) | 1977-11-08 | 1977-11-08 | Automatic exposure control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5466837A true JPS5466837A (en) | 1979-05-29 |
Family
ID=15117724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13398777A Pending JPS5466837A (en) | 1977-11-08 | 1977-11-08 | Automatic exposure control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5466837A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6064328A (en) * | 1983-09-20 | 1985-04-12 | Nippon Kogaku Kk <Nikon> | Exposure controller of camera |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028831A (en) * | 1973-07-16 | 1975-03-24 | ||
JPS5029035A (en) * | 1973-07-17 | 1975-03-24 | ||
JPS516537A (en) * | 1974-07-05 | 1976-01-20 | Canon Kk | ROSHUTSUSEIGYOHOHO |
-
1977
- 1977-11-08 JP JP13398777A patent/JPS5466837A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028831A (en) * | 1973-07-16 | 1975-03-24 | ||
JPS5029035A (en) * | 1973-07-17 | 1975-03-24 | ||
JPS516537A (en) * | 1974-07-05 | 1976-01-20 | Canon Kk | ROSHUTSUSEIGYOHOHO |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6064328A (en) * | 1983-09-20 | 1985-04-12 | Nippon Kogaku Kk <Nikon> | Exposure controller of camera |
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