Control method of preview apparatus in AF single lens reflex cam

Details Control method of preview apparatus in AF single lens reflex cam Control method of preview apparatus in AF single lens reflex cam

1997-11-18

1999-04-06

Perkey, W. B.

Photography

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

396358, 396509, G03B 1912, G03B 902

Patent

active

058929908

ABSTRACT:
A method for controlling a preview apparatus which is actuated by a preview switch which can be actuated externally, in an AF single lens reflex camera, wherein when the preview switch is turned ON, the AF operation is carried out before a stop-down operation to move a diaphragm from a full-open position to a set diaphragm position begins.

REFERENCES:
patent: 4734730 (1988-03-01), Ootsuka et al.
patent: 4792823 (1988-12-01), Fujino et al.
patent: 4835558 (1989-05-01), Araki et al.
patent: 5257052 (1993-10-01), Kurosaki et al.
Copy of a United Kingdom Search Report issued with UK App. No. 9724171.5.

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