1. An electronic camera, comprising: an imager having an imaging surface to capture an object scene for repeatedly generating an object scene image; an assigner for assigning a search area on said imaging surface; a searcher for repeatedly executing search processing to search a feature image on the search area assigned by said assigner in parallel with executing generation processing by said imager; an outputter for outputting position information representative of a position of the feature image detected by said searcher; and a changer for changing a size and/or a position of the search area assigned by said assigRnmnt means assigner in correspondence with panning and/or tilting of said imaging surface.