JPS5638028A - Camera - Google Patents

Camera

Info

Publication number
JPS5638028A
JPS5638028A JP9800780A JP9800780A JPS5638028A JP S5638028 A JPS5638028 A JP S5638028A JP 9800780 A JP9800780 A JP 9800780A JP 9800780 A JP9800780 A JP 9800780A JP S5638028 A JPS5638028 A JP S5638028A
Authority
JP
Japan
Prior art keywords
circuit
value
shutter
aperture
controlling
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
JP9800780A
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 JP9800780A priority Critical patent/JPS5638028A/en
Publication of JPS5638028A publication Critical patent/JPS5638028A/en
Pending legal-status Critical Current

Links

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  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE: To obtain a camera which does not miss the shutter chance even in an uncontrollable region by deciding whether the exposure operated value is within a threshold value or not and selecting either exposure controlling or reoperation based on threshold values.
CONSTITUTION: When a gate circuit 4 decided the selection of shutter second time photographing mode or the like, the sequence control commands for the photographing mode are read out from the ROM5c of a control circuit 5 via the circuit 4 and the correct aperture value is calculated by an arithmetic circuit 8a. Whether this calculated value is within the maximum aperture value and minimum aperture value having been set in a photographing information setting means 2 or not is decided by an operation result discriminating circuit 9 and when it is within the threshold, the calculated aperture value of the circuit 8a is stored in a memory circuit 10, whereby the aperture controlling based on this stored value is accomplished. If it is other than the threshold value, the circuit 8a calculates the shutter second time by the similar arithmetic controlling based on the maximum or minimum aperture value having been set in the means 2, thereby controlling the shutter second time. The same holds true of the aperture priority, thus even in an uncontrollable region the photographing is performed without missing the shutter chance.
COPYRIGHT: (C)1981,JPO&Japio
JP9800780A 1980-07-16 1980-07-16 Camera Pending JPS5638028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9800780A JPS5638028A (en) 1980-07-16 1980-07-16 Camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9800780A JPS5638028A (en) 1980-07-16 1980-07-16 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
JPS5638028A true JPS5638028A (en) 1981-04-13

Family

ID=14207664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9800780A Pending JPS5638028A (en) 1980-07-16 1980-07-16 Camera

Country Status (1)

Country Link
JP (1) JPS5638028A (en)

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