Tripod rack and pinion focussing mechanism rotatable relative to

Details Tripod rack and pinion focussing mechanism rotatable relative to Tripod rack and pinion focussing mechanism rotatable relative to

1978-10-13

1980-02-05

Griffin, Donald A.

354286, 354293, G03B 300, G03B 1700

Patent

active

041870204

ABSTRACT:
A photographic lens mount has a tripod portion that is rotatable about the optical axis of the lens. A rack and pinion type of focussing mechanism is used and the pinion is fixed with respect to the tripod mounting seat irrespective of the rotational position of the lens support and the camera body. The ring portion of the gear mechanism is formed on a ring that is rotatable with respect to the camera support around the optical axis.

REFERENCES:
patent: 3589260 (1971-06-01), Ferra
Novoflex leaflet; Distr. Internat'l Photographic Exposition, Washington D. C., 3/1957.

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