The position of a principal image within a frame is designated manually or in association with the operation of the automatic focussing mechanism. The position information of the principal image is recorded on a photographic film when a subject is photographed. In obtaining a photoprint, the position...http://www.google.de/patents/US5218392?utm_source=gb-gplus-sharePatent US5218392 - Apparatus for recording position information of principal image and photographic printing method using position information
