Patent ID: 9210314
Filing Date: 2015-12-08
Classification: G02B,G03B,H04N

Abstract:
1. An imaging apparatus for communicating with a lens apparatus comprising a focus lens, the imaging apparatus comprising: a signal processing unit configured to generate an evaluation value for focus adjustment from an imaging signal obtained by an imaging element; a transmitting unit configured to transmit information corresponding to the vibration center and the vibration amplitude of the focus lens, wherein the lens apparatus is configured to vibrate the focus lens based on the received information corresponding to the vibration center and the vibration amplitude; a camera controlling unit configured to transmit to the lens apparatus a drive command for shifting the focus lens to a position corresponding to a focal point detected by use of the evaluation value, wherein the camera controlling unit is operable to instruct to control a wobbling operation which is an operation that vibrates the focus lens in an optical axis direction at a predetermined amplitude; and an acquiring unit configured to acquire from the lens apparatus data indicating the amount of a change in image magnification, wherein the camera controlling unit is configured to determine a first direction which is a direction that the evaluation value increases by the wobbling operation, wherein the camera controlling unit is configured to, in a case of performing center shift for shifting the vibration center of the focus lens in the first direction, (a) perform control so as to shift the vibration center of the focus lens in the first direction in a first mode if the amount of change in image magnification relative to the shift amount of the focus lens is a first amount of change, which is greater than a second amount of change, (b) perform control so as to shift the vibration center of the focus lens in the first direction in a second mode if the amount of change in image magnification relative to the shift amount of the focus lens is the second amount of change, and (c) perform control so as to restrict shifting the vibration center of the focus lens in the first direction if the amount of change in image magnification relative to the shift amount of the focus lens is greater than the first amount of change, and wherein, in the first mode, the shift amount of the focus lens becomes less than the predetermined amplitude when the focus lens shifts in a direction opposite to the first direction, and, in the second mode, the shift amount of the focus lens becomes greater than the predetermined amplitude when the focus lens shifts in a direction corresponding to the first direction.