An image pickup apparatus which is capable of suppressing generation of shadows even when the aperture of the photographic lens is stopped down. A digital camera as an image pickup apparatus includes a photographic lens, a image pickup element that picks up an image of an object, and an optical low-pass...http://www.google.com/patents/US20080037125?utm_source=gb-gplus-sharePatent US20080037125 - IMAGE PICKUP APPARATUS