Image pickup apparatus and imaging method that perform focus action following zoom action
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United States of America Patent
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Aug 30, 2016
Grant Date -
Jan 1, 2015
app pub date -
Jun 26, 2014
filing date -
Jun 27, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An image pickup apparatus capable of performing a focus adjustment with accuracy and in short time even when a focal position deviation is caused due to a delay of a focus action relative to a zoom action performed responding to a zoom operation. When a focal position of the lens unit changes with execution of a zoom operation, a lens controller drives a focus lens group in such a manner that the focus lens group moves following the zoom operation and the focal position is made constant. A focus detector performs focus detection based on an optical image. According to a focus detection result, the focus lens group is driven for focus adjustment. During the follow-up movement of the focus lens group, a camera controller stops the focus adjustment until a defocusing amount obtained from the focus detection result becomes smaller than a first predetermined value.
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