JPS5442138A - Exposure time control device in single-reflex lens cameras - Google Patents
Exposure time control device in single-reflex lens camerasInfo
- Publication number
- JPS5442138A JPS5442138A JP1220474A JP1220474A JPS5442138A JP S5442138 A JPS5442138 A JP S5442138A JP 1220474 A JP1220474 A JP 1220474A JP 1220474 A JP1220474 A JP 1220474A JP S5442138 A JPS5442138 A JP S5442138A
- Authority
- JP
- Japan
- Prior art keywords
- control device
- exposure time
- time control
- lens cameras
- reflex lens
- 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)
- Shutter-Related Mechanisms (AREA)
Abstract
PURPOSE: To perform temperature correction of time constant circuit by providing a variable resistor of linear characteristics and a circuit which flows the current changing in proportion to absolute temperature to the variable resistor and generating the voltage proportional the logarithmic values of set exposure information other than the brightness of the object.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1220474A JPS5442138A (en) | 1974-01-31 | 1974-01-31 | Exposure time control device in single-reflex lens cameras |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1220474A JPS5442138A (en) | 1974-01-31 | 1974-01-31 | Exposure time control device in single-reflex lens cameras |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5442138A true JPS5442138A (en) | 1979-04-03 |
Family
ID=11798856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1220474A Pending JPS5442138A (en) | 1974-01-31 | 1974-01-31 | Exposure time control device in single-reflex lens cameras |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5442138A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01276122A (en) * | 1988-04-27 | 1989-11-06 | Sharp Corp | Analog arithmetic circuit |
-
1974
- 1974-01-31 JP JP1220474A patent/JPS5442138A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01276122A (en) * | 1988-04-27 | 1989-11-06 | Sharp Corp | Analog arithmetic circuit |
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