FR821214A - Camera device for automatically determining the exposure time of photographic enlargements - Google Patents

Camera device for automatically determining the exposure time of photographic enlargements

Info

Publication number
FR821214A
FR821214A FR821214DA FR821214A FR 821214 A FR821214 A FR 821214A FR 821214D A FR821214D A FR 821214DA FR 821214 A FR821214 A FR 821214A
Authority
FR
France
Prior art keywords
exposure time
camera device
automatically determining
photographic enlargements
enlargements
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Edmond Cousin
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 filed Critical
Application granted granted Critical
Publication of FR821214A publication Critical patent/FR821214A/en
Expired 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
FR821214D 1937-04-29 1937-04-29 Camera device for automatically determining the exposure time of photographic enlargements Expired FR821214A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR821214T 1937-04-29

Publications (1)

Publication Number Publication Date
FR821214A true FR821214A (en) 1937-11-30

Family

ID=9275876

Family Applications (1)

Application Number Title Priority Date Filing Date
FR821214D Expired FR821214A (en) 1937-04-29 1937-04-29 Camera device for automatically determining the exposure time of photographic enlargements

Country Status (1)

Country Link
FR (1) FR821214A (en)

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