Patent ID: 8269879

Claim:
An image pickup apparatus, comprising: an image pickup optical system which forms an image of a subject; an imaging device which obtains an image by picking up the image of the subject via the image pickup optical system; a target detection device which detects a size of a target in the image; a first control device which controls a focus position of the image pickup optical system according to the size of the target detected by the target detection device; a second control device which performs continuous AF that detects a focusing position where a contrast in the image reaches a local maximum by moving the focus position of the image pickup optical system, moves the focus position of the image pickup optical system to the focusing position and keeps an in-focus state, and a motion detection device which detects a motion of a subject, wherein the second control device does not perform detection of the focusing position based on the contrast in the image if the subject moves faster than a referential speed.