FR867668A - Improvements to devices used in photography and cinematography - Google Patents

Improvements to devices used in photography and cinematography

Info

Publication number
FR867668A
FR867668A FR867668DA FR867668A FR 867668 A FR867668 A FR 867668A FR 867668D A FR867668D A FR 867668DA FR 867668 A FR867668 A FR 867668A
Authority
FR
France
Prior art keywords
cinematography
photography
devices used
devices
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
Henri Emile Liabeuf
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 FR867668A publication Critical patent/FR867668A/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
    • G03B27/727—Optical projection devices wherein the contrast is controlled optically (e.g. uniform exposure, two colour exposure on variable contrast sensitive material)

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
FR867668D 1940-11-09 1940-11-09 Improvements to devices used in photography and cinematography Expired FR867668A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR867668T 1940-11-09

Publications (1)

Publication Number Publication Date
FR867668A true FR867668A (en) 1941-11-21

Family

ID=9345741

Family Applications (1)

Application Number Title Priority Date Filing Date
FR867668D Expired FR867668A (en) 1940-11-09 1940-11-09 Improvements to devices used in photography and cinematography

Country Status (1)

Country Link
FR (1) FR867668A (en)

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