Image pickup apparatus and control method therefor, and control program for implementing the control method

摘要

An image pickup apparatus that can accurately correct an error in the position of a taking lens due to a loss of synchronism of the stepping motor during opening and closing of the lens barrier. The position of a taking lens retractable into the body of the image pickup apparatus is detected. A reference position is provided on one of both sides of a section in which the lens barrier is driven to open and close, the one side being a side on which the lens barrier is not driven to open and close.