JPS5638021A - Single-lens reflex camera - Google Patents

Single-lens reflex camera

Info

Publication number
JPS5638021A
JPS5638021A JP9799880A JP9799880A JPS5638021A JP S5638021 A JPS5638021 A JP S5638021A JP 9799880 A JP9799880 A JP 9799880A JP 9799880 A JP9799880 A JP 9799880A JP S5638021 A JPS5638021 A JP S5638021A
Authority
JP
Japan
Prior art keywords
shutter
photographing
aperture
circuit
program
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
JP9799880A
Other languages
Japanese (ja)
Inventor
Nobuhiko Shinoda
Tadashi Ito
Soichi Nakamoto
Fumio Ito
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP9799880A priority Critical patent/JPS5638021A/en
Publication of JPS5638021A publication Critical patent/JPS5638021A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE: To perform high-accuracy program photographing by operating and storing the combinations of the aperture values and shutter second time suited for program photographing based on photometric values and controlling the exposure at the photographing.
CONSTITUTION: When it is detected that the shutter and aperture selection switches SW6, SW7 of an operation setting circuit 3 are both off, the corresponding sequence program is read out from the ROM5c of a control circuit 5 by the program photographing decision signal of a gate circuit 4. Prior to photographing, the combinations of the aperture values and shutter second time suited for program photographing based on the photometric values from a photometric circuit 1, the constant α from the constant switch of a photographing information setting means 2, etc. are calculated in an arithmetic circuit 8a and are stored in a memory device 10. At the subsequent shutter releasing, the aperture and shutter second time are controlled until the operated exposure value of the circuit 8a by rephotometry assumes a predetermined relation with the storage contents of the device 10, thus the program photographing of the single-lens reflex camera of focal plane shutter is accomplished highly accurately by controlling of the shutter second time and aperture based on the same luminance.
COPYRIGHT: (C)1981,JPO&Japio
JP9799880A 1980-07-16 1980-07-16 Single-lens reflex camera Pending JPS5638021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9799880A JPS5638021A (en) 1980-07-16 1980-07-16 Single-lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9799880A JPS5638021A (en) 1980-07-16 1980-07-16 Single-lens reflex 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
JPS5638021A true JPS5638021A (en) 1981-04-13

Family

ID=14207322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9799880A Pending JPS5638021A (en) 1980-07-16 1980-07-16 Single-lens reflex camera

Country Status (1)

Country Link
JP (1) JPS5638021A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6050568U (en) * 1983-09-14 1985-04-09 ミノルタ株式会社 electronic still camera
WO1991011072A1 (en) * 1990-01-08 1991-07-25 Nikon Corporation Still picture pickup device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6050568U (en) * 1983-09-14 1985-04-09 ミノルタ株式会社 electronic still camera
WO1991011072A1 (en) * 1990-01-08 1991-07-25 Nikon Corporation Still picture pickup device

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