Provided is output apparatus configured to output correction information on combinations each of which is a combination of a value of a parameter of an optical system and correction data corresponding to the value, the system forming an image to be picked up by a camera, the information being used for determining correction amount regarding optical characteristic of the optical system the output apparatus including: memory; and processor determining the correction information based on information regarding the camera, in which the processor determines, letting positive integers M and N satisfying M