An image-capturing apparatus, comprising: an image sensor that captures an image of a region behind a vehicle, the captured image being displayed on a display section of the vehicle; and a controller (43; 71) that controls reading of the image from the image sensor on a basis of vehicle information acquired by the vehicle, a detector that detects inclination information regarding the vehicle using the vehicle information, wherein, according to the inclination information, the controller (43; 71) controls the reading of the image from the image sensor, wherein the controller (43; 71) controls a reading position, in the image sensor, from which the image is read, characterized in that the reading position is specified by a reading-start position and a size of the image read from the image sensor, the reading-start position being a position, in the image sensor, at which the reading of the image from the image sensor is started, and the detector detects the inclination information indicating leftward and rightward inclinations of the vehicle, wherein, when inclination to left or right is detected, the controller (43; 71) controls the reading of the image from the image sensor according to the inclination information with a first reading size larger than a second reading size when the vehicle is not inclined, the apparatus further comprising a processing section that rotates the image read from the image sensor according to the inclination information, and cuts an image to be displayed on the display section out of the rotated image, wherein the cut-out image is of the same size as an image read out from the image sensor when the vehicle is not inclined, wherein said first reading size is the smallest size to obtain said cut-out image. an image sensor that captures an image of a region behind a vehicle, the captured image being displayed on a display section of the vehicle; and a controller (43; 71) that controls reading of the image from the image sensor on a basis of vehicle information acquired by the vehicle, a detector that detects inclination information regarding the vehicle using the vehicle information, wherein, according to the inclination information, the controller (43; 71) controls the reading of the image from the image sensor, wherein the controller (43; 71) controls a reading position, in the image sensor, from which the image is read, characterized in that the reading position is specified by a reading-start position and a size of the image read from the image sensor, the reading-start position being a position, in the image sensor, at which the reading of the image from the image sensor is started, and the detector detects the inclination information indicating leftward and rightward inclinations of the vehicle, wherein, when inclination to left or right is detected, the controller (43; 71) controls the reading of the image from the image sensor according to the inclination information with a first reading size larger than a second reading size when the vehicle is not inclined, the apparatus further comprising a processing section that rotates the image read from the image sensor according to the inclination information, and cuts an image to be displayed on the display section out of the rotated image, wherein the cut-out image is of the same size as an image read out from the image sensor when the vehicle is not inclined, wherein said first reading size is the smallest size to obtain said cut-out image.