Focus size compensation

Details Focus size compensation Focus size compensation

1976-11-08

1978-04-04

Gonzales, John

Optics: motion pictures

Removable film strip magazine type

350187, 352140, 354195, 354197, G03B 300, G03B 708, G03B 1302

Patent

active

040830578

ABSTRACT:
A zoom lens system is shown for use in conjunction with the normal optical elements of an automatic focusing camera to correct the change in magnification which occurs when a lens system focused on a far subject is refocused on a nearer subject or vice versa.

REFERENCES:
patent: 3431052 (1969-03-01), Jacknau
patent: 3972056 (1976-07-01), Tsujimoto et al.

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