There is provided an image processing apparatus comprising: an acquisition unit configured to acquire an image signal; a setting unit configured to set, in an image expressed by the image signal, a plurality of evaluation areas to be targets of evaluation value calculation; a dividing unit configured to divide the image expressed by the image signal into a plurality of divided image areas; and a plurality of calculation units configured to acquire, from the dividing unit, divided image signals respectively corresponding to the plurality of divided image areas, and calculate evaluation values for the plurality of evaluation areas based on evaluation area image signals respectively corresponding to the plurality of evaluation areas included in the divided image areas. Among the plurality of evaluation areas, the plurality of calculation units do not calculate an evaluation value for each evaluation area that spans two or more of the divided image areas.