An image processing apparatus includes: a first acquiring unit configured to acquire first image data; a second acquiring unit configured to acquire information related to a first exposure value; a setting unit configured to set any of a plurality of display modes; and a generating unit configured to generate second image data from the first image data, wherein in a case where a first display mode has been set, the generating unit generates second image data having brightness corresponding to the first exposure value, in a case where a second display mode has been set, the generating unit generates second image data having brightness corresponding to a second exposure value, and the second exposure value used in the second display mode is changeable in accordance with a user instruction.