In a phototaking lens with the focal length variable from a predetermined value at the wide-angle end position to another predetermined value at the telephoto end position, a part of lens elements constituting the phototaking lens is rendered movable relative to other lens components. There is provided...http://www.google.com/patents/US5436683?utm_source=gb-gplus-sharePatent US5436683 - Camera capable of panorama phototaking
