发明名称 |
IMAGE PICKUP APPARATUS THAT PERFORMS AUTOMATIC FOCUS CONTROL AND CONTROL METHOD FOR THE IMAGE PICKUP APPARATUS |
摘要 |
<p>An image pickup apparatus that can efficiently obtain an offset between focal positions detected in phase difference-based focus detection and contrast- based focus detection by using results of phase difference-based focus detection at multiple points. Focal positions in a plurality of regions based on a pair of image signals obtained from different pupils are obtained. A focal position for a focus lens at which a contrast of image signals for image pickup is at a peak is detected. A target focal position is determined from the plurality of focal positions. When another focal position is present between a present focal position and the target focal position, an offset between a focal position of the focus lens at which the contrast detected at the other focal position while the focus lens is moving is at a peak and the other focal position is calculated.</p> |
申请公布号 |
WO2011013725(A1) |
申请公布日期 |
2011.02.03 |
申请号 |
WO2010JP62736 |
申请日期 |
2010.07.22 |
申请人 |
CANON KABUSHIKI KAISHA;EGAWA AKIRA |
发明人 |
EGAWA AKIRA |
分类号 |
G02B7/36;G02B7/28;G02B7/34;G03B13/36 |
主分类号 |
G02B7/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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