An imaging apparatus includes the following processing units. An imaging device generates first image data according to incident light. A compression unit performs fixed length coding on the first image data to generate first compressed data. A storage unit stores the first compressed data. A de-compression unit de-compresses only first designated data that is a part of the first compressed data so as to generate first partial de-compressed data. A signal processing unit corrects image quality of the first partial de-compressed data to generate first partial corrected image data. A display unit displays the first partial corrected image data.