JPS5511297A - Aperture information input device - Google Patents

Aperture information input device

Info

Publication number
JPS5511297A
JPS5511297A JP8517279A JP8517279A JPS5511297A JP S5511297 A JPS5511297 A JP S5511297A JP 8517279 A JP8517279 A JP 8517279A JP 8517279 A JP8517279 A JP 8517279A JP S5511297 A JPS5511297 A JP S5511297A
Authority
JP
Japan
Prior art keywords
camera
power source
aperture value
specified
aperture
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
JP8517279A
Other languages
Japanese (ja)
Inventor
Yukio Iura
Masayoshi Yamamichi
Takashi Uchiyama
Tetsuya Taguchi
Yukio Mashita
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 JP8517279A priority Critical patent/JPS5511297A/en
Publication of JPS5511297A publication Critical patent/JPS5511297A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain accurate specified aperture value signals and facilitate operation, by using the power source for driving the exposure control circuit porvided on the camera side as the power source for aperture value signal information of a dimmer type flash device.
CONSTITUTION: By fitting a flash device 8 intended to obtain specified aperture value signal by changing over resistors r1 to r3 by means of a switch S3 to an accessory shoe 6 of a camera, a current corresponding to the selected specified aperture signal flows through camera side power source E, meter M, terminals e2, e1, resistor r1 or r3, and termianls f1,f2. By the EE mechanism on the camera side, the aperture opening is automatically set to the specifiec aperture diameter corresponding to the indication of the meter M, Since the camera side power source having a stable output voltage is used as the power source for specified aperture value signal source, accurate specified aperture value signals may be supplied to the exposure control circuit on the camera side, and the operation may be facilitated.
COPYRIGHT: (C)1980,JPO&Japio
JP8517279A 1979-07-05 1979-07-05 Aperture information input device Pending JPS5511297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8517279A JPS5511297A (en) 1979-07-05 1979-07-05 Aperture information input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8517279A JPS5511297A (en) 1979-07-05 1979-07-05 Aperture information input device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49036794A Division JPS50129224A (en) 1974-04-01 1974-04-01

Publications (1)

Publication Number Publication Date
JPS5511297A true JPS5511297A (en) 1980-01-26

Family

ID=13851235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8517279A Pending JPS5511297A (en) 1979-07-05 1979-07-05 Aperture information input device

Country Status (1)

Country Link
JP (1) JPS5511297A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007253184A (en) * 2006-03-23 2007-10-04 Nikkeikin Aluminium Core Technology Co Ltd Die for molding hollow extruded shape

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907059A1 (en) * 1968-02-13 1969-10-02 Lumina Sprl Device for controlling capacitor discharge pulses
US3710701A (en) * 1970-12-21 1973-01-16 Canon Kk Flash device for a camera and a photographing system with an artificial illuminator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907059A1 (en) * 1968-02-13 1969-10-02 Lumina Sprl Device for controlling capacitor discharge pulses
US3710701A (en) * 1970-12-21 1973-01-16 Canon Kk Flash device for a camera and a photographing system with an artificial illuminator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007253184A (en) * 2006-03-23 2007-10-04 Nikkeikin Aluminium Core Technology Co Ltd Die for molding hollow extruded shape

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