1. An apparatus comprising: an image capture unit to capture an object image; an acquisition unit to acquire a developing parameter for image data captured by said image capture unit; an analysis unit to analyze RAW image data generated by said image capture unit; a first composition unit to compose a plurality of RAW image data generated by said image capture unit and generate composite RAW image data; a determination unit to determine a composition ratio for a plurality of developing parameters respectively for development of said plurality of RAW image data acquired by said acquisition unit in accordance with a result obtained from said analysis unit or a user's setting; a second composition unit to compose the plurality of developing parameters acquired by said acquisition unit based on said composition ratio for the plurality of developing parameters determined by said determination unit and generate one composite developing parameter; and a development unit to develop the composite RAW image data composed by said first composition unit using the composite developing parameter generated by said second composition unit.