| 摘要 |
A digital camera has distance measurement zone setting means ( 12 ) for dividing distance to a subject into a plurality of distance measurement zones; distance measurement zone selection means ( 13 ) for selecting a distance measurement zone to be scanned; an autofocus evaluation calculation circuit ( 14 ) for acquiring an AF evaluation value by scanning the selected distance measurement zone; zone-update determination means ( 15 ) for determining, through use of the AF evaluation value, whether or not to update a distance measurement zone to be scanned; and in-focus position decision means ( 16 ) for appropriately updating the scanned distance measurement zone based upon the determination as to whether to update the distance measurement zone, and deciding an in-focus position based upon acquisition of AF evaluation value. A focusing lens ( 2 ) is driven to the in-focus position by a focusing-lens drive circuit ( 17 ).
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