FR1103404A - Exposure time calculator for photographs taken in natural light - Google Patents

Exposure time calculator for photographs taken in natural light

Info

Publication number
FR1103404A
FR1103404A FR1103404DA FR1103404A FR 1103404 A FR1103404 A FR 1103404A FR 1103404D A FR1103404D A FR 1103404DA FR 1103404 A FR1103404 A FR 1103404A
Authority
FR
France
Prior art keywords
exposure time
natural light
photographs taken
time calculator
calculator
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
Robert-Eugene-Alexan Mariot
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 FR1103404A publication Critical patent/FR1103404A/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
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR1103404D 1947-02-13 1947-02-13 Exposure time calculator for photographs taken in natural light Expired FR1103404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103404T 1947-02-13

Publications (1)

Publication Number Publication Date
FR1103404A true FR1103404A (en) 1955-11-03

Family

ID=9622194

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1103404D Expired FR1103404A (en) 1947-02-13 1947-02-13 Exposure time calculator for photographs taken in natural light

Country Status (1)

Country Link
FR (1) FR1103404A (en)

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