Motor driven zoom camera

Details Motor driven zoom camera Motor driven zoom camera

1995-06-05

1997-10-21

Adams, Russell E.

Photography

With exposure objective focusing means, focusing aid, or...

Having in-focus threshold adjustable

G03B 300, G03B 1300

Patent

active

056806477

ABSTRACT:
The present invention relates to an optical camera having a zoom function in which a focal length can be varied or the variation is actuated by a focal length changing member, and in particular to a camera in which a focal length is varied through a motor.
The optical camera has a zoom lens operable by a rotatable zoom ring for changing the focal length thereof. An automatic focusing operation is effected by a control means when the focal length is changed so that an image of an object viewed through a viewfinder remains in focus. The zoom lens can include a motor and an in-exposure zoom control means can be provided for controlling zooming movement of the lens during an exposure operation.

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United Kingdom Search Report dated Sep. 27, 1994 with respect to Claims 29-45 of counterpart United Kingdom Application No. 9315654.5.
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