Auto focus system that controls focusing speeds and movements based on image conditions
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United States of America Patent
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Feb 1, 2011
Grant Date -
Apr 10, 2008
app pub date -
Sep 26, 2005
filing date -
Dec 8, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An auto focus system is provided in which a focus movement speed and a cut off frequency of a filter for detecting a contrast from a video signal in AF of a contrast detecting system can be manually set in AF, so that an optimum AF can be achieved under various photographing conditions.
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