1. An electronic camera, comprising: an imager, having an imaging surface capturing a scene, which repeatedly outputs a scene image; an extractor which extracts a specific reference image coincident with a partial image outputted from said imager corresponding to a predetermined area allocated to the imaging surface, from among a plurality of reference images; an adjuster which executes a process of adjusting an exposure amount of the imaging surface by emphasizing the predetermined area in parallel with an extraction process of said extractor; an identifier which identifies a color of an object equivalent to the partial image noticed by said extractor, corresponding to extracting the specific reference image by said extractor; a corrector which executes a process of correcting a tonality of the scene image outputted from said imager with reference to an identified result of said identifier, in place of the extraction process of said extractor; and a searcher which searches for a partial image coincident with the specific reference image extracted by said extractor from the scene image having the tonality corrected by said corrector.