Set of dark slides for use with a zone exposure system

Details Set of dark slides for use with a zone exposure system Set of dark slides for use with a zone exposure system

1983-04-04

1984-10-23

Mathews, A. A.

354354, G03B 1700

Patent

active

044785011

ABSTRACT:
A set of dark slides for a film holder of a camera to adapt the camera to be used with a zone system exposure procedure in which all the exposures are made on a single piece of film. Each dark slide of the set of slides has a single opening. Each opening is formed at a different location on each dark slide so that the openings of all of the dark slides of the set of slides form a pattern of exposures on a piece of film when the piece of film is exposed separately with each dark slide in the holder. The number of dark slides and the pattern of openings in the dark slides are selected to provide a number of separate exposures on the piece of film in the slide holder equal to the number of zones in the zone exposure system being used and a pattern which permits comparison of one exposure with another. At least some of the dark slides of the set have their single openings located on one side of the longitudinal axis of the dark slide so the dark slide can be used to provide exposures at the same relative location on opposite sides of the longitudinal axis of the film by turning over the dark slide in the film holder between one exposure and another.

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