TERMIUM Plus®

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GRADATION UTILE [1 record]

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Alphabetical list of terms

Record 1 1980-08-14

English

Subject field(s)
  • Photography
DEF

The relative ability of a light-sensitive material to reproduce accurately the various tones between black and white.

French

Domaine(s)
  • Photographie
CONT

(...) l'utilisation de la gradation totale d'un panier aux sels d'argent ne permet pas de représenter convenablement le sujet photographié (...) Dans la pratique, (...) l'image photographique sera satisfaisante lorsque la gamme de ses diverses densités se trouvera comprise entre un gris très clair (...) et un gris très foncé (...) Le rapport des quantités de lumière qui font avoir ces deux gris opposés précise l'étendue de l'intervalle pratiquement utilisable de l'émulsion, appelé "gradation utile".

Spanish

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