1. An image capturing apparatus comprising: an image sensor in which a plurality of pixels are arrayed two-dimensionally; a driver that bends the image sensor; and a controller that controls the driver to bend the image sensor a predetermined curvature by controlling the driver on the basis of a table for curvature control based on optical information regarding a zoom position of an imaging lens, wherein the controller is configured to determine whether an image capture operation is started and to determine whether an image capture operation is terminated, wherein the controller controls the driver, in response to determining that an image capture operation is started, to bend the image sensor to a curvature based on the optical information, and in response to determining that an image capture operation is terminated, controls the driver so that stress acting on the image sensor is less than in a case where an image capture operation is carried out regardless of the optical information of the imaging lens, wherein in a case where an image capture operation is carried out, the controller sets the curvature to which the image sensor is bent to a greater value in the case where the zoom position of the imaging lens is on a wide angle-side than in the case where the zoom position is on a telephoto-side, and wherein the image capture operation is an operation for reading out an image signal from the image sensor.