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JPS5730914A - Photometer for photographing using auxiliary light - Google Patents

Photometer for photographing using auxiliary light

Info

Publication number
JPS5730914A
JPS5730914A JP10760780A JP10760780A JPS5730914A JP S5730914 A JPS5730914 A JP S5730914A JP 10760780 A JP10760780 A JP 10760780A JP 10760780 A JP10760780 A JP 10760780A JP S5730914 A JPS5730914 A JP S5730914A
Authority
JP
Japan
Prior art keywords
receiving elements
light receiving
light
exposure time
circuits
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
JP10760780A
Other languages
Japanese (ja)
Other versions
JPH0557529B2 (en
Inventor
Nobuyuki Taniguchi
Yoshio Yuasa
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 JP10760780A priority Critical patent/JPS5730914A/en
Priority to US06/289,384 priority patent/US4373793A/en
Priority to DE19813130880 priority patent/DE3130880A1/en
Publication of JPS5730914A publication Critical patent/JPS5730914A/en
Priority to US06/701,780 priority patent/USRE32437E/en
Publication of JPH0557529B2 publication Critical patent/JPH0557529B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits
    • G03B7/093—Digital circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE:To obtain the contrast in a photographic surface which has such a feature as desired by a photographer by providing a plurality of light receiving elements which perform photometry for a plurality of parts in the photographic surface, and determining the exposure time and amount of flash light based on the outputs of the light receiving elements. CONSTITUTION:The light receiving elements P1, P2,... perform the photometry for a plurality of parts in the photographic surface. The signals corresponding to the amounts of received lights in the light receiving elements P1, P2,... when light is emitted from an auxiliary light source FL are integrated in integrators 3, 5,... via photometric circuits 1, 2,..., and sampled and held in S/H circuits 4, 6,.... When the light is not emitted from the auxiliary light source FL, the signals corresponding to the amounts of received lights in the light receiving elements P1, P2,... are sampled and held in the S/H circuits 4, 6,.... The exposure time is computed from said outputs and the output of an exposure time setting circuit 26.
JP10760780A 1980-08-04 1980-08-04 Photometer for photographing using auxiliary light Granted JPS5730914A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP10760780A JPS5730914A (en) 1980-08-04 1980-08-04 Photometer for photographing using auxiliary light
US06/289,384 US4373793A (en) 1980-08-04 1981-08-03 Light measuring device for flash photography
DE19813130880 DE3130880A1 (en) 1980-08-04 1981-08-04 LIGHT MEASURING DEVICE FOR FLASH LIGHT PHOTOGRAPHY
US06/701,780 USRE32437E (en) 1980-08-04 1985-02-13 Light measuring device for flash photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10760780A JPS5730914A (en) 1980-08-04 1980-08-04 Photometer for photographing using auxiliary light

Publications (2)

Publication Number Publication Date
JPS5730914A true JPS5730914A (en) 1982-02-19
JPH0557529B2 JPH0557529B2 (en) 1993-08-24

Family

ID=14463453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10760780A Granted JPS5730914A (en) 1980-08-04 1980-08-04 Photometer for photographing using auxiliary light

Country Status (1)

Country Link
JP (1) JPS5730914A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS592023A (en) * 1982-06-28 1984-01-07 Olympus Optical Co Ltd Camera
US4748468A (en) * 1986-02-17 1988-05-31 Minolta Camera Kabushiki Kaisha Exposure display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS592023A (en) * 1982-06-28 1984-01-07 Olympus Optical Co Ltd Camera
JPH0477297B2 (en) * 1982-06-28 1992-12-08 Olympus Optical Co
US4748468A (en) * 1986-02-17 1988-05-31 Minolta Camera Kabushiki Kaisha Exposure display device

Also Published As

Publication number Publication date
JPH0557529B2 (en) 1993-08-24

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