Autofocus apparatus

Photography – With exposure objective focusing means – focusing aid – or... – Plural focusing or rangefinding areas

Reexamination Certificate

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Details

C359S698000

Reexamination Certificate

active

07660519

ABSTRACT:
An autofocus apparatus includes an imaging device that captures a subject image through a photographic lens; an AF area determining device that determines a range of image signals to be used for autofocus adjustment based upon image signals provided by the imaging device; a focus adjustment device that adjusts a focal point position achieved through the photographic lens by driving a focus lens so as to maximize contrast achieved with the image signals in the determined range; and a control device that controls the focus adjustment device, if the range of the image signals determined by the AF area determining device has been altered, so as to adjust the focal point position by using image signals in the altered range.

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patent: A 2003-92726 (2003-03-01), None
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patent: A 2003-107555 (2003-04-01), None
patent: A 2003-107567 (2003-04-01), None
patent: A 2003-289468 (2003-10-01), None
patent: 2006208818 (2006-08-01), None

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