Film and photographic apparatus

Details Film and photographic apparatus Film and photographic apparatus

1980-04-09

1981-10-20

Hix, L. T.

Optics: motion pictures

Picture carriers

Strip type

242195, 352241, G03C 176

Patent

active

042957133

ABSTRACT:
A film magazine contains a roll of film having an image portion and a leader. The filmstrip is perforated at predetermined intervals with larger perforations in the image portion than in the leader. A camera mechanism is disclosed which uses the perforations to advance the filmstrip, detects the size of the perforations, and meters only when a large, image portion perforation is advanced to a predetermined position in the camera.

REFERENCES:
patent: 1561941 (1925-11-01), Merle
patent: 2559892 (1951-07-01), Mihalyi et al.
patent: 2898805 (1959-08-01), Solow et al.

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