Image-pickup apparatus and focus controlling method

Details Image-pickup apparatus and focus controlling method Image-pickup apparatus and focus controlling method

2011-08-16

2011-08-16

Fuller, Rodney (Department: 2862)

Television

Camera, system and detail

Optics

Reexamination Certificate

active

07999874

ABSTRACT:
The image-pickup apparatus performs a scan operation for sequentially obtaining focus evaluation values with movement of a focus lens and calculates an in-focus position on the focus evaluation values. The apparatus includes a controller configured to divide a movable range of the focus lens for the scan operation into plural zones, and to change a scan operation zone where the scan operation is performed from a current zone to a next zone among the plural zones when the focus evaluation value satisfies a predetermined condition. The controller sets, as the predetermined condition, a first condition for changing the scan operation zone from a specific zone to the next zone, and a second condition for changing the scan operation zone from a zone other than the specific zone to the next zone. The first condition is harder to be satisfied than the second condition.

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