A control unit that carries out focus adjustment by the drive control of a focus lens changes an oscillation convergence waiting time of the focus lens after stopped according to the imaging conditions. In the case in which an aperture value is larger than a predetermined value and the tolerated range of a focus deviation amount that accompanies the oscillation of the lens with stopped is large, the waiting time set in a timer is changed so as to be short in comparison to the waiting time that is set in the case in which the tolerated range of a focus deviation amount is small. The control unit outputs a stop command for a focus lens and ends the movement control of the focus lens after waiting for the passage of a time that has been calculated by a timer.