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couche dorsale antihalo [1 record]

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Record 1 2016-02-26

English

Subject field(s)
  • Photography
  • Types of Documentation (Library Science)
  • Cinematography
CONT

To eliminate or minimize this effect, called halation, most films incorporate a light-absorbing dye in the backing layer (...) Portrait films have an antihalation backing into which a retouching surface is incorporated. The backing makes it possible to use a retouching pencil on the film.

French

Domaine(s)
  • Photographie
  • Documentation (Bibliothéconomie)
  • Cinématographie
CONT

La gamme de films pour les arts graphiques est très étendue en sensibilité, depuis les émulsions à faible contraste (...) jusqu'aux émulsions à contraste extrême (...) Tous ont une couche dorsale antihalo.

OBS

Ce halo est évité par l'emploi de supports munis d'une couche colorée dorsale ou intermédiaire susceptible d'être décolorée ou éliminée lors des opérations de traitements photographiques (...)

Spanish

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