FR2485757A1 - Procede pour regler une duree d'exposition photographique pour tenir compte du defaut d'application de la loi de reciprocite d'un support photosensible - Google Patents

Procede pour regler une duree d'exposition photographique pour tenir compte du defaut d'application de la loi de reciprocite d'un support photosensible Download PDF

Info

Publication number
FR2485757A1
FR2485757A1 FR8112657A FR8112657A FR2485757A1 FR 2485757 A1 FR2485757 A1 FR 2485757A1 FR 8112657 A FR8112657 A FR 8112657A FR 8112657 A FR8112657 A FR 8112657A FR 2485757 A1 FR2485757 A1 FR 2485757A1
Authority
FR
France
Prior art keywords
reciprocity
reproduction
correct
functional equation
diaphragm
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
FR8112657A
Other languages
English (en)
French (fr)
Other versions
FR2485757B1 (enExample
Inventor
Tsuneo Takagi
Hiroyuki Yonehara
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.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing 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
Priority claimed from JP8644280A external-priority patent/JPS5713443A/ja
Priority claimed from JP16559980A external-priority patent/JPS5789748A/ja
Application filed by Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Publication of FR2485757A1 publication Critical patent/FR2485757A1/fr
Application granted granted Critical
Publication of FR2485757B1 publication Critical patent/FR2485757B1/fr
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
    • G03B7/097—Digital circuits for control of both exposure time and aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Exposure Control For Cameras (AREA)
FR8112657A 1980-06-27 1981-06-26 Procede pour regler une duree d'exposition photographique pour tenir compte du defaut d'application de la loi de reciprocite d'un support photosensible Granted FR2485757A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8644280A JPS5713443A (en) 1980-06-27 1980-06-27 Controlling method for exposure time of photoengraving camera
JP16559980A JPS5789748A (en) 1980-11-25 1980-11-25 Exposure time controlling method of picture copying device

Publications (2)

Publication Number Publication Date
FR2485757A1 true FR2485757A1 (fr) 1981-12-31
FR2485757B1 FR2485757B1 (enExample) 1984-12-21

Family

ID=26427562

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8112657A Granted FR2485757A1 (fr) 1980-06-27 1981-06-26 Procede pour regler une duree d'exposition photographique pour tenir compte du defaut d'application de la loi de reciprocite d'un support photosensible

Country Status (6)

Country Link
DE (1) DE3124693C2 (enExample)
DK (1) DK279981A (enExample)
ES (1) ES503365A0 (enExample)
FR (1) FR2485757A1 (enExample)
GB (1) GB2078986B (enExample)
IT (1) IT1171341B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5756836A (en) * 1980-09-22 1982-04-05 Dainippon Screen Mfg Co Ltd Method and device for correcting anti-reciprocity law in case of color reproduction
DE3603249A1 (de) * 1986-02-03 1987-08-06 Hauck Gmbh Belichtungszeitgeber fuer photographische materialien

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186145A5 (enExample) * 1972-05-25 1974-01-04 Misomex Ab

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046497B (de) * 1957-06-19 1958-12-11 Agfa Ag Zeitschaltvorrichtung fuer fotografische Kopiergeraete
DE1497371C3 (de) * 1965-03-10 1974-01-10 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren zur Regelung der Belichtungszeit von Kopiergeräten
GB1311470A (en) * 1969-11-19 1973-03-28 Littlejohn Co Ltd Sidney R Photographic reproduction cameras
DE2251334C3 (de) * 1972-10-19 1980-04-10 Eskofot A/S, Ballerup (Daenemark) Reprokamera
US4168120A (en) * 1978-04-17 1979-09-18 Pako Corporation Automatic exposure corrections for photographic printer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186145A5 (enExample) * 1972-05-25 1974-01-04 Misomex Ab

Also Published As

Publication number Publication date
IT1171341B (it) 1987-06-10
GB2078986A (en) 1982-01-13
FR2485757B1 (enExample) 1984-12-21
IT8148784A0 (it) 1981-06-26
DK279981A (da) 1981-12-28
ES8300206A1 (es) 1982-10-01
GB2078986B (en) 1984-06-27
ES503365A0 (es) 1982-10-01
IT8148784A1 (it) 1982-12-26
DE3124693A1 (de) 1982-02-25
DE3124693C2 (de) 1987-02-19

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