Camera

Details Camera Camera

1996-08-29

1998-11-03

Gray, David M.

Photography

Having variable focal length of camera objective

Having focus operation

G03B 1700

Patent

active

058323139

ABSTRACT:
A single-lens reflex camera comprises a taking lens having a zooming optical system, a finder whose angle of view is determined according to a focal length of the taking lens, and an operation member which is manually operated. In the single-lens reflex camera, the focal length of the taking lens is changed by driving the zooming optical system, and the zooming operation is controlled in response to an operation of the operation member so that the focal length of the taking lens is changed in the wide-angle direction by a predetermined amount. An angle of view corresponding to that which is seen before the focal length is changed is displayed within the finder.

REFERENCES:
patent: 5014078 (1991-05-01), Kudo et al.
patent: 5189458 (1993-02-01), Miyamoto et al.
patent: 5196877 (1993-03-01), Mukai et al.
patent: 5196880 (1993-03-01), Ishibashi et al.
patent: 5345285 (1994-09-01), Hasuhita et al.
patent: 5389988 (1995-02-01), Daitoku

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