TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

LONGUEUR FOCALE [1 record]

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Filter results by subject field

Alphabetical list of terms

Record 1 2011-07-28

English

Subject field(s)
  • Optics
  • Photography
  • Optical Instruments
DEF

The distance from the focal point of a lens or curved mirror to the principal point; for a thin lens it is approximately the distance from the focal point to the lens.

French

Domaine(s)
  • Optique
  • Photographie
  • Instruments d'optique
DEF

Longueur comptée du plan principal au foyer.

CONT

[Photographie] Plus la longueur focale est courte et plus l'angle de vision est grand (lentille grand-angle). Plus la longueur focale est longue et plus l'angle de vision est étroit (téléobjectif).

Spanish

Campo(s) temático(s)
  • Óptica
  • Fotografía
  • Instrumentos ópticos
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TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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