focal-plane plate

From EngHydroDic
Revision as of 21:44, 20 November 2009 by Ihb (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

A glass plate set in the camera so that the surface away from the lens coincides with the focal plane. Its purpose is to position the emulsion of the film in the focal plane when the film is physically pressed into contact with the glass plate. Also called contact glass or contact plate.

Personal tools