Focus information display system

Photography – With exposure objective focusing means – focusing aid – or... – Having indicator

Reexamination Certificate

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Details

C396S079000, C396S124000, C396S125000, C396S150000, C348S346000, C348S353000, C250S201700

Reexamination Certificate

active

07877006

ABSTRACT:
A focus information display system is provided in which focus state detection that is performed during automatic focusing (AF) and the like is also performed during manual focusing (MF) and the like to display focus information indicating a focus state. By arranging a focus position range at which a correct focus state is determined when a correct focus display is being performed to be wider than a focus position range at which a correct focus state is determined when an out-of-focus display is being performed, stabilization of a state of correct focus display is achieved without jeopardizing correct focusing accuracy when performing focusing according to a focus information display.

REFERENCES:
patent: 4641942 (1987-02-01), Sakai et al.
patent: 5629735 (1997-05-01), Kaneda et al.
patent: 2004/0130652 (2004-07-01), Sasaki et al.
patent: 2005/0110890 (2005-05-01), Sasaki et al.
patent: 1637912 (2006-03-01), None
patent: 1638319 (2006-03-01), None
patent: 2002-365710 (2002-12-01), None
patent: 2004-212458 (2004-07-01), None
patent: WO-02/099495 (2002-12-01), None

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