IMAGE PICKUP APPARATUS AND IMAGING METHOD THAT PERFORM FOCUS ACTION FOLLOWING ZOOM ACTION

摘要

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.

主权项

1. An image pickup apparatus, comprising:
a follow-up unit configured to perform a follow-up action where a focus action, in which a focus lens is moved in an optical axis direction so as to correct a change in optical image-formed position on an imaging element caused by a zoom operation, is followed to a zoom action that is performed responding to the zoom operation; and an auto-focus adjustment unit configured to perform an auto-focus adjustment by moving the focus lens in the optical axis direction according to a focus detection result, wherein in a case where an instruction for the auto-focus adjustment is given while the follow-up action is being performed by said follow-up unit, said auto-focus adjustment unit operates in a mode in which the auto-focus adjustment is not executed until a defocusing amount obtained from the focus detection result becomes smaller than a predetermined value.