FR841925A - Device for automatic light dosing, applicable to photographic and cinematographic cameras, allowing to photograph in any light with the same exposure time - Google Patents

Device for automatic light dosing, applicable to photographic and cinematographic cameras, allowing to photograph in any light with the same exposure time

Info

Publication number
FR841925A
FR841925A FR841925DA FR841925A FR 841925 A FR841925 A FR 841925A FR 841925D A FR841925D A FR 841925DA FR 841925 A FR841925 A FR 841925A
Authority
FR
France
Prior art keywords
light
photographic
photograph
applicable
allowing
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
Naftul Anatole Goldstein
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 FR841925A publication Critical patent/FR841925A/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
    • 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
    • G03B7/081—Analogue circuits
    • G03B7/083—Analogue circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR841925D 1937-08-10 1938-08-09 Device for automatic light dosing, applicable to photographic and cinematographic cameras, allowing to photograph in any light with the same exposure time Expired FR841925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU841925X 1937-08-10

Publications (1)

Publication Number Publication Date
FR841925A true FR841925A (en) 1939-06-01

Family

ID=20129689

Family Applications (1)

Application Number Title Priority Date Filing Date
FR841925D Expired FR841925A (en) 1937-08-10 1938-08-09 Device for automatic light dosing, applicable to photographic and cinematographic cameras, allowing to photograph in any light with the same exposure time

Country Status (1)

Country Link
FR (1) FR841925A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203125B (en) * 1956-09-13 1965-10-14 Knut Schaefer Iris control for photographic and cinematographic devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203125B (en) * 1956-09-13 1965-10-14 Knut Schaefer Iris control for photographic and cinematographic devices

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