An image capturing apparatus has an image capturing unit that accumulates a charge pixel-by-pixel and outputs an image signal corresponding to the amount of accumulated charge, a generation unit that acquires image signals by performing a set number of readouts of image signals of pixels from the image capturing unit, calculates, with respect to each pixel, image data that is an average of image signals read out from the same pixels, and generates an image having the image data as a characteristic of each pixel, and a correction unit that specifies a position of a defective pixel of the image capturing apparatus and generates correction data that is an image signal that is an average of a set certain number of pixels located in a periphery of a defective pixel.
