The precise vertical plane in the camera at which the film surface is located. On many cameras this is marked on the top of the camera with a film plane mark.
Technically the film plane is actually curved and not a flat plane, because most lenses project an image as if onto a section of a large sphere, but film plane is what its traditionally called.
cf. film plane mark, focal plane, plane.
Entry last updated 2002-04-27. Term 469 of 1487.
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