Autofocus adjustment device and method

Details Autofocus adjustment device and method Autofocus adjustment device and method

1995-08-14

1997-04-08

Perkey, W. B.

Photography

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

Having pursuit mode

G03B 1336

Patent

active

056193009

ABSTRACT:
An autofocus adjustment device includes a focus detection assembly that repeatedly detects the focus coordination state of the photographic lens assembly. A memory stores the results of the focus detection assembly. The device includes a movement direction reversal determination assembly that determines reversal of the movement direction of a subject based on the focus coordination state recorded in the memory. An exposure assembly controls the photographic operation. A prohibition assembly prohibits photographic operation until the focus detection operations are executed for a specified number of times when the movement direction reversal determination assembly determines that the movement direction of the photographic subject has reversed.

REFERENCES:
patent: 5061951 (1991-10-01), Higashihara et al.
patent: 5061953 (1991-10-01), Higashihara et al.
patent: 5189459 (1993-02-01), Watanabe et al.
patent: 5239332 (1993-08-01), Muramatsu et al.

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