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FR910260A - Light meter for printing photographic enlargements - Google Patents

Light meter for printing photographic enlargements

Info

Publication number
FR910260A
FR910260A FR910260DA FR910260A FR 910260 A FR910260 A FR 910260A FR 910260D A FR910260D A FR 910260DA FR 910260 A FR910260 A FR 910260A
Authority
FR
France
Prior art keywords
light meter
printing photographic
photographic enlargements
enlargements
printing
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
Jean-Marcel Monfroy
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 FR910260A publication Critical patent/FR910260A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/12—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using wholly visual means
    • G01J1/122—Visual exposure meters for determining the exposure time in photographical recording or reproducing
    • G01J1/124—Visual exposure meters for determining the exposure time in photographical recording or reproducing based on the comparison of the intensity of measured light with a comparison source or comparison illuminated surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR910260D 1944-11-13 1944-11-13 Light meter for printing photographic enlargements Expired FR910260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR910260T 1944-11-13

Publications (1)

Publication Number Publication Date
FR910260A true FR910260A (en) 1946-06-03

Family

ID=9410339

Family Applications (1)

Application Number Title Priority Date Filing Date
FR910260D Expired FR910260A (en) 1944-11-13 1944-11-13 Light meter for printing photographic enlargements

Country Status (1)

Country Link
FR (1) FR910260A (en)

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