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JPS5666833A - Auxiliary light control device for camera using both averaged overall light reading and partial light reading - Google Patents

Auxiliary light control device for camera using both averaged overall light reading and partial light reading

Info

Publication number
JPS5666833A
JPS5666833A JP14236879A JP14236879A JPS5666833A JP S5666833 A JPS5666833 A JP S5666833A JP 14236879 A JP14236879 A JP 14236879A JP 14236879 A JP14236879 A JP 14236879A JP S5666833 A JPS5666833 A JP S5666833A
Authority
JP
Japan
Prior art keywords
light reading
light
reading
partial
averaged overall
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
Application number
JP14236879A
Other languages
Japanese (ja)
Other versions
JPH0157770B2 (en
Inventor
Yoichiro Tsuchidate
Masamichi Kato
Masayoshi Hirai
Yoshihiro Ide
Takeshi Iimura
Takanori Horikoshi
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.)
SECONIC KK
SEKONITSUKU KK
Mamiya Camera Co Ltd
Original Assignee
SECONIC KK
SEKONITSUKU KK
Mamiya Camera 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 SECONIC KK, SEKONITSUKU KK, Mamiya Camera Co Ltd filed Critical SECONIC KK
Priority to JP14236879A priority Critical patent/JPS5666833A/en
Publication of JPS5666833A publication Critical patent/JPS5666833A/en
Publication of JPH0157770B2 publication Critical patent/JPH0157770B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)

Abstract

PURPOSE: To always make the photographing condition satisfactory, by emitting an auxiliary light in case when the partial light reading value is remarkably dark comparing with the averaged overall light reading value.
CONSTITUTION: The partial light reading value which has been logarithmically compressed by the partial light reading photosensitive element PDs and the operational OAS is compared with the averaged overall light reading which has been logarthmically compressed and is generated at the same time, by the comparator CO2. And in case when the partial light reading value is remarkably dark comparing with the averaged overall reading, an electric flash mode (EP) output is generated from the comparator CO2, and an auxiliary light is emitted. At the same time the EP mode display LEOLEP in the field of view of the finder is turned on, the analog switch AS1, etc. are closed, and the regular exposure LEDLS, LA, etc. are turned off. Accordingly, the photographing condition always becomes satisfactory, and also it can be recognized that the auxiliary light is used.
COPYRIGHT: (C)1981,JPO&Japio
JP14236879A 1979-11-02 1979-11-02 Auxiliary light control device for camera using both averaged overall light reading and partial light reading Granted JPS5666833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14236879A JPS5666833A (en) 1979-11-02 1979-11-02 Auxiliary light control device for camera using both averaged overall light reading and partial light reading

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14236879A JPS5666833A (en) 1979-11-02 1979-11-02 Auxiliary light control device for camera using both averaged overall light reading and partial light reading

Publications (2)

Publication Number Publication Date
JPS5666833A true JPS5666833A (en) 1981-06-05
JPH0157770B2 JPH0157770B2 (en) 1989-12-07

Family

ID=15313752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14236879A Granted JPS5666833A (en) 1979-11-02 1979-11-02 Auxiliary light control device for camera using both averaged overall light reading and partial light reading

Country Status (1)

Country Link
JP (1) JPS5666833A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177129A (en) * 1981-04-23 1982-10-30 Olympus Optical Co Ltd Light emission controller of stroboscopic lamp of camera
JPS58113917A (en) * 1981-12-28 1983-07-07 Mamiya Koki Kk Photometric device of camera
JPS59172632A (en) * 1983-03-22 1984-09-29 Konishiroku Photo Ind Co Ltd Full automatic exposure controlling method of camera
JPS63169622A (en) * 1987-01-08 1988-07-13 Olympus Optical Co Ltd Strobe automatic lighting camera

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177129A (en) * 1981-04-23 1982-10-30 Olympus Optical Co Ltd Light emission controller of stroboscopic lamp of camera
JPH045971B2 (en) * 1981-04-23 1992-02-04 Olympus Optical Co
JPS58113917A (en) * 1981-12-28 1983-07-07 Mamiya Koki Kk Photometric device of camera
JPS59172632A (en) * 1983-03-22 1984-09-29 Konishiroku Photo Ind Co Ltd Full automatic exposure controlling method of camera
JPS63169622A (en) * 1987-01-08 1988-07-13 Olympus Optical Co Ltd Strobe automatic lighting camera

Also Published As

Publication number Publication date
JPH0157770B2 (en) 1989-12-07

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