An image capturing system includes an image sensor and a mechanical shutter. A charge accumulation operation of the pixels of each row of the image sensor starts at the end of a reset operation, and ends when the mechanical shutter sets the pixels of each row to a light shield state. The reset operation of the pixels of each row of the image sensor is performed to select rows sequentially in a first direction from an upper surface to a lower surface of a housing. The mechanical shutter ends exposure of the image sensor while causing a shutter curtain to run in the first direction, and a readout operation of the pixels of each row of the image sensor is performed to select rows sequentially in a second direction that is the reverse of the first direction.