Patent ID: 8531587
Filing Date: 2013-09-10
Classification: G02B,G03B,H04N

Abstract:
1. A lens-interchangeable image pickup apparatus having a focus detection unit for detecting an in-focus position for an object based on contrast evaluation values, the image pickup apparatus comprising: an acquisition unit configured to acquire, from an interchangeable lens of the image pickup apparatus, first information of a distance up to a focus drive limit in a focus driving direction during focus detection, and second information of a focus driving speed; and a controller configured to change a lens driving mode for focus detection, based on the first information, the second information, and third information of a charge storage interval for charge storage in a sensor for acquiring a signal for use in focus detection, wherein the lens driving mode includes a first driving mode in which lens driving is continued until stoppage of the lens driving is requested, and a second driving mode in which lens driving is performed by an amount corresponding to a requested drive value, and wherein the controller sets, when the interchangeable lens is determined to not provide the first information, the lens driving mode during the focus detection as the second driving mode.