| 摘要 |
Even when a point light source is present in a subject or a normal subject is erroneously determined as a point light source in determination of the presence or absence of a point light source, the following is implemented: the driving time of a focus lens is shortened and quick focusing operation is provided. The optimum focus lens stroke is computed based on information on a high-brightness region and a low-brightness region in an image. Then the focus lens is driven while the focus lens stroke is continuously varied based on the amount of change in high-brightness region and low-brightness region.
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