Patent ID: 7511735

Claim:
An image-taking apparatus comprising: an image pickup element which photoelectrically converts an object image; an image-taking section which carries out image-taking by using the image pickup element; a first control section which, in a calibration mode, successively shifts a parameter relating to image-taking so as to include a reference value adjusted during manufacturing of the image-taking apparatus and makes the image-taking section take a plurality of images with parameters different from each other; a second control section which, in the calibration mode, stores a correction amount relating to the parameter corresponding to an image selected by a user among the plurality of images in a memory; and a third control section which, in a normal image-taking mode, corrects the parameter to be used for a normal image-taking on the basis of the correction amount stored in the memory and the reference value, wherein the parameter is an amount of defocus of an image-taking optical system which forms the object image, and the reference value is an amount of defocus corresponding to an in-focus state in focusing control of the image-taking optical system.