An imaging apparatus restores a deteriorated image to a high-resolution image when the deteriorated image is restored based on a PSF image captured by an optical system. An imaging apparatus includes an optical system, and a PSF capturing unit that acquires point spread function (PSF) information captured by the optical system and outputs corrected PSF information. A subject capturing unit acquires subject information captured by the optical system and outputs the subject information; and an image restoration unit performs a restore operation for restoring the subject information, based on the corrected PSF information and the subject information. The PSF capturing unit subtracts a correction luminance value from the PSF information, and outputs the corrected PSF information. The correction luminance value is greater by a luminance value Is than a luminance value Nf of fixed value noise that does not fluctuate with time.