1. An electronic camera comprising: an imaging unit continuously capturing an image of a subject to generate a plurality of frames of RAW data; a buffer unit temporarily recording the plurality of frames of RAW data generated by the image unit; an evaluation unit evaluating quality of the plurality of frames of RAW data recorded in the buffer unit by comparing information regarding the plurality of frames of RAW data and selecting a highly evaluated frame of RAW data from the plurality of frames of RAW data according to a result of the quality evaluation; and a recording unit recording the highly evaluated frame of RAW data selected by the evaluation unit into a recording medium.