Shutter control apparatus for use in variable focal length camer

Details Shutter control apparatus for use in variable focal length camer Shutter control apparatus for use in variable focal length camer

1986-12-02

1987-11-24

Perkey, W. B.

354435, 35419512, G03B 700, G03B 300, G03B 1503

Patent

active

047084545

ABSTRACT:
A shutter control apparatus for use with a variable focal length camera which has a lens shutter, a detecting means for detecting a fully opened state of the lens shutter, a discriminating means for discriminating the focal length of a photographing optical system, and a controlling means for closing the lens shutter in response to the detection of the fully opened state of the lens shutter made by the detecting means when the discriminating means determined that the photographing optical system has a longer focal length during flash photography.

REFERENCES:
patent: 3529523 (1970-09-01), Haskell
patent: 4065776 (1977-12-01), Iwata et al.
patent: 4122466 (1978-10-01), Iwata
patent: 4494850 (1985-01-01), Katsuma et al.
patent: 4500191 (1985-02-01), Yamanaka
patent: 4534638 (1985-08-01), Hirohata et al.

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