JPS5442138A - Exposure time control device in single-reflex lens cameras - Google Patents

Exposure time control device in single-reflex lens cameras

Info

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
Application number
JP1220474A
Other languages
Japanese (ja)
Inventor
Yasuhiro Nanba
Masayoshi Sawara
Kotaro Yada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP1220474A priority Critical patent/JPS5442138A/en
Publication of JPS5442138A publication Critical patent/JPS5442138A/en
Pending legal-status Critical Current

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
JP1220474A 1974-01-31 1974-01-31 Exposure time control device in single-reflex lens cameras Pending JPS5442138A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01276122A (en) * 1988-04-27 1989-11-06 Sharp Corp Analog arithmetic circuit

Cited By (1)

* Cited by examiner, † Cited by third party
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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