Autofocus cine camera having automatic variable speed focusing

Details Autofocus cine camera having automatic variable speed focusing Autofocus cine camera having automatic variable speed focusing

1980-04-07

1982-01-05

Hix, L. T.

Optics: motion pictures

Removable film strip magazine type

352140, G03B 310

Patent

active

043090982

ABSTRACT:
A photographic camera having an adjustable focus lens is provided with an automatic focus control system to focus said lens at one focusing rate if the lens focusing movement necessary to focus said lens to the proper subject-in-focus position is greater than a predetermined magnitude, and at another focusing rate if said necessary lens focusing movement is equal to or less than said predetermined magnitude.

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patent: 3972607 (1976-08-01), Reider
patent: 4002405 (1977-01-01), Stahl
patent: 4066347 (1978-01-01), Wagensonner
patent: 4103152 (1978-07-01), Stauffer
patent: 4178087 (1979-12-01), Shenk et al.

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