JPS5666834A - Flashlight photographing photometric device - Google Patents

Flashlight photographing photometric device

Info

Publication number
JPS5666834A
JPS5666834A JP14246779A JP14246779A JPS5666834A JP S5666834 A JPS5666834 A JP S5666834A JP 14246779 A JP14246779 A JP 14246779A JP 14246779 A JP14246779 A JP 14246779A JP S5666834 A JPS5666834 A JP S5666834A
Authority
JP
Japan
Prior art keywords
flashlight
photographing
photometric
capacitor
value
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
JP14246779A
Other languages
Japanese (ja)
Other versions
JPS642929B2 (en
Inventor
Yoshio Yuasa
Nobuyuki Taniguchi
Norio Ishikawa
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 JP14246779A priority Critical patent/JPS5666834A/en
Publication of JPS5666834A publication Critical patent/JPS5666834A/en
Publication of JPS642929B2 publication Critical patent/JPS642929B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE: To make it possible to execute a simple and swift photographing, by deciding a proper aperture value in case of flashlight photographing, in accordance with the photometric signal corresponding to only a stationary light and a flashlight by the high-pass filter.
CONSTITUTION: When the switch S0 is closed and a flashlight is emitted from the flashlight emitting device 7, FETFT8 is turned off, and the capacitor C2 starts electric charge. An AC photometric component current by a flashlight only in the set point by the photodetector PD and the operational amplifier OA2 for logarithmic conversion is supplied to this capacitor C2 through HPF formed by the capacitor C0, the resistance R2, etc. And the photometric quantity of light by only a flashlight through the A/D converter 1, the demultiplexer, etc. is stored in the register 32. At the time of photographing, the arithmetic circuit 4 does not emit a flashlight each time but decides a proper aperture value in case of flashlight photographing, in accordance with the set points of the exposure time setting circuit 20 and the film sensitivity setting circuit 22, the photometric value of a stationary light, etc., based on the stored value of the register 32. Accordingly, a flaslight photographing can be executed swiftly by means of a simple operation.
COPYRIGHT: (C)1981,JPO&Japio
JP14246779A 1979-11-02 1979-11-02 Flashlight photographing photometric device Granted JPS5666834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14246779A JPS5666834A (en) 1979-11-02 1979-11-02 Flashlight photographing photometric device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14246779A JPS5666834A (en) 1979-11-02 1979-11-02 Flashlight photographing photometric device

Publications (2)

Publication Number Publication Date
JPS5666834A true JPS5666834A (en) 1981-06-05
JPS642929B2 JPS642929B2 (en) 1989-01-19

Family

ID=15315987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14246779A Granted JPS5666834A (en) 1979-11-02 1979-11-02 Flashlight photographing photometric device

Country Status (1)

Country Link
JP (1) JPS5666834A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010509613A (en) * 2006-11-08 2010-03-25 ソニー エリクソン モバイル コミュニケーションズ， エービー Camera and method in camera

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324527U (en) * 1989-07-14 1991-03-13

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4885226A (en) * 1972-02-16 1973-11-12
JPS54137209A (en) * 1978-04-17 1979-10-24 Hitachi Ltd Ring-off detection system
JPS569730A (en) * 1979-07-05 1981-01-31 Minolta Camera Co Ltd Method and device for photometry for flash photography
JPS5660418A (en) * 1979-10-23 1981-05-25 Minolta Camera Co Ltd Photometric method for flash photography and its device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4885226A (en) * 1972-02-16 1973-11-12
JPS54137209A (en) * 1978-04-17 1979-10-24 Hitachi Ltd Ring-off detection system
JPS569730A (en) * 1979-07-05 1981-01-31 Minolta Camera Co Ltd Method and device for photometry for flash photography
JPS5660418A (en) * 1979-10-23 1981-05-25 Minolta Camera Co Ltd Photometric method for flash photography and its device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010509613A (en) * 2006-11-08 2010-03-25 ソニー エリクソン モバイル コミュニケーションズ， エービー Camera and method in camera
JP4891408B2 (en) * 2006-11-08 2012-03-07 ソニー エリクソン モバイル コミュニケーションズ， エービー Camera and method in camera

Also Published As

Publication number Publication date
JPS642929B2 (en) 1989-01-19

Similar Documents

Publication Publication Date Title
JPS5445128A (en) Exposure control system for camera
JPS5652740A (en) Camera having data imprinting device
JPS54128734A (en) Flash discharger enabled to effect preparatory flash
JPS5675627A (en) Iris controller of camera
JPS5443727A (en) Exposure control device for camera
JPS5666834A (en) Flashlight photographing photometric device
JPS5454029A (en) Light varying strobo camera of program type
JPS5662231A (en) Control device for diaphragm of camera
JPS5666835A (en) Flashlight photographing photometric device
JPS5745514A (en) Exposure controller of photographying device of microscope
JPS5666833A (en) Auxiliary light control device for camera using both averaged overall light reading and partial light reading
JPS5748719A (en) Exposure controller for flash photography
JPS55592A (en) Flash photographing system
JPS5454632A (en) Photometric circuit of photographing apparatus
JPS5784442A (en) Flash photographing device of ttl metering system
JPS55144215A (en) Exposure information feeding circuit of electric shutter
JPS54128334A (en) Electric circuits of camera
JPS5689728A (en) Electronic control flash device
JPS5511239A (en) Aperture control unit in flash photography
JPS5526539A (en) Camera
JPS5922889B2 (en) Transient light integrator
JPS54141629A (en) Program control system of aperture and shutter priority camera
JPS5543515A (en) Strobe for camera
JPS569730A (en) Method and device for photometry for flash photography
JPH02105126A (en) Stroboscope incorporated camera