At least one embodiment of an imaging apparatus has: an imaging plane capable of being curved; an evaluation unit that determines an evaluation value indicating a degree of in-focus of an image signal from the imaging element; an adjustment unit adjusting a position of the focus adjustment lens to a position with the highest evaluation value; and a control unit that controls the curvature of the imaging plane for correcting an image plane curve in the optical system and for bringing the image signal into focus. When the adjustment unit adjusts the position of the focus adjustment lens to an end portion of the movable area, the curvature of the imaging plane is controlled for bringing the image signal into focus on a priority basis.