JPS569730A - Method and device for photometry for flash photography - Google Patents

Method and device for photometry for flash photography

Info

Publication number
JPS569730A
JPS569730A JP8562579A JP8562579A JPS569730A JP S569730 A JPS569730 A JP S569730A JP 8562579 A JP8562579 A JP 8562579A JP 8562579 A JP8562579 A JP 8562579A JP S569730 A JPS569730 A JP S569730A
Authority
JP
Japan
Prior art keywords
signal corresponding
flash
obtaining
aperture value
stationary light
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
JP8562579A
Other languages
Japanese (ja)
Other versions
JPS642927B2 (en
Inventor
Yoshio Yuasa
Norio Ishikawa
Nobuyuki Taniguchi
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 JP8562579A priority Critical patent/JPS569730A/en
Publication of JPS569730A publication Critical patent/JPS569730A/en
Publication of JPS642927B2 publication Critical patent/JPS642927B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE: To make it possible to accurately obtain a correct aperture value without remeasuring even if the brightness of a stationary light changes by enabling the correct aperture value accounting for the stationary light at the flash photographing to be obtained without continuing the measuring during the preset exposure time.
CONSTITUTION: This consists of the lst process of obtaining the signal corresponding to the quantity of emitted light of the flash Ps having beforehand been emitted based on the signal from a photometric circuit 20, the 2nd process of obtaining the signal corresponding to the intensity of stationary light Pa based on the signal from the photometric circuit 20, and the 3rd process of obtaining the correct aperture value at the flash photographing based on the signal corresponding to the quantity of emitted light of the flash Ps, the signal corresponding to the intensity of the stationary light Pa, the signal corresponding to the preset exposure time and the signal corresponding to the preset film sensitivity.
COPYRIGHT: (C)1981,JPO&Japio
JP8562579A 1979-07-05 1979-07-05 Method and device for photometry for flash photography Granted JPS569730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8562579A JPS569730A (en) 1979-07-05 1979-07-05 Method and device for photometry for flash photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8562579A JPS569730A (en) 1979-07-05 1979-07-05 Method and device for photometry for flash photography

Publications (2)

Publication Number Publication Date
JPS569730A true JPS569730A (en) 1981-01-31
JPS642927B2 JPS642927B2 (en) 1989-01-19

Family

ID=13864012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8562579A Granted JPS569730A (en) 1979-07-05 1979-07-05 Method and device for photometry for flash photography

Country Status (1)

Country Link
JP (1) JPS569730A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5666834A (en) * 1979-11-02 1981-06-05 Minolta Camera Co Ltd Flashlight photographing photometric device
JPS59105621A (en) * 1982-12-09 1984-06-19 Olympus Optical Co Ltd Device for controlling light emission of electronic flash

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5383739A (en) * 1976-12-29 1978-07-24 Olympus Optical Co Ltd Strobo flash control system for focal plane shutter camera of electric type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5383739A (en) * 1976-12-29 1978-07-24 Olympus Optical Co Ltd Strobo flash control system for focal plane shutter camera of electric type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5666834A (en) * 1979-11-02 1981-06-05 Minolta Camera Co Ltd Flashlight photographing photometric device
JPS59105621A (en) * 1982-12-09 1984-06-19 Olympus Optical Co Ltd Device for controlling light emission of electronic flash

Also Published As

Publication number Publication date
JPS642927B2 (en) 1989-01-19

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