Patent ID: 8861948

Claim:
An image pickup apparatus comprising: a lens apparatus having: an image pickup optical system including a focus lens unit and a zoom lens unit; a zoom state detector that detects a position of the zoom lens unit; and a controller that controls driving of the image pickup optical system; a camera apparatus having: a light receiving unit that receives a beam from the image pickup optical system; and an image display unit that displays image information obtained by the light receiving unit; an AF frame operation unit that sets, as an AF frame, a range for performing focusing in a display of the image display unit; and a distance measuring unit installed with a parallax with respect to an optical axis of the image pickup optical system and that measures a distance to an object, wherein the distance measuring unit includes a distance measuring direction changing unit that changes an optical axis direction of the distance measuring unit, and wherein the controller is configured to, for measuring the distance to the object in the angle of field of the AF frame: control the distance measuring direction changing unit to change the optical axis direction of the distance measuring unit based on the position of the zoom lens unit detected by the zoom state detector, the position and a size of the AF frame, and an angle of field of the distance measuring unit; select, from among measured distances obtained by the distance measuring unit, a measured distance obtained in an angle of field of the AF frame, based on the position of the zoom lens unit and the position of the AF frame; and perform the focusing by driving the focus lens unit based on the selected measured distance.