TERMIUM Plus®

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ROTARY DIAPHRAGM [1 record]

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Alphabetical list of terms

Record 1 2007-07-09

English

Subject field(s)
  • Audiovisual Techniques and Equipment
  • Photography
DEF

An eccentrically mounted disc with a number of different apertures any of which can be brought into position on the lens axis by rotating the disc.

French

Domaine(s)
  • Audiovisuel (techniques et équipement)
  • Photographie
DEF

Disque muni de petites ouvertures de différents diamètres, qui peuvent être amenées par rotation, devant, entre, ou derrière les lentilles d'un objectif faisant ainsi office de diaphragme réglable.

OBS

Le diaphragme rotatif se rencontre sur certains modèles d'appareils simples, sur certains objectifs dont la construction ne permet pas le montage d'un diaphragme à iris, dans certains objectifs anciens, ainsi que sous le plateau du microscope de type simple qui ne comportent pas de condensateur.

Spanish

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