JPS56158326A - Photometer for flash photographing - Google Patents

Photometer for flash photographing

Info

Publication number
JPS56158326A
JPS56158326A JP6205780A JP6205780A JPS56158326A JP S56158326 A JPS56158326 A JP S56158326A JP 6205780 A JP6205780 A JP 6205780A JP 6205780 A JP6205780 A JP 6205780A JP S56158326 A JPS56158326 A JP S56158326A
Authority
JP
Japan
Prior art keywords
circuit
light
difference
display device
logarithm
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
JP6205780A
Other languages
English (en)
Japanese (ja)
Other versions
JPS645686B2 (enrdf_load_html_response
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 JP6205780A priority Critical patent/JPS56158326A/ja
Publication of JPS56158326A publication Critical patent/JPS56158326A/ja
Publication of JPS645686B2 publication Critical patent/JPS645686B2/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
    • G03B7/28—Circuitry to measure or to take account of the object contrast
    • 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
    • G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
JP6205780A 1980-05-10 1980-05-10 Photometer for flash photographing Granted JPS56158326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6205780A JPS56158326A (en) 1980-05-10 1980-05-10 Photometer for flash photographing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6205780A JPS56158326A (en) 1980-05-10 1980-05-10 Photometer for flash photographing

Publications (2)

Publication Number Publication Date
JPS56158326A true JPS56158326A (en) 1981-12-07
JPS645686B2 JPS645686B2 (enrdf_load_html_response) 1989-01-31

Family

ID=13189124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6205780A Granted JPS56158326A (en) 1980-05-10 1980-05-10 Photometer for flash photographing

Country Status (1)

Country Link
JP (1) JPS56158326A (enrdf_load_html_response)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6133123A (ja) * 1984-07-24 1986-02-17 Shiba Trading Kk 育毛養毛等美髪食品

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6133123A (ja) * 1984-07-24 1986-02-17 Shiba Trading Kk 育毛養毛等美髪食品

Also Published As

Publication number Publication date
JPS645686B2 (enrdf_load_html_response) 1989-01-31

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