Imaging apparatus, and a method of controlling imaging apparatus using an imaging surface correction map for performing corrections

An imaging apparatus on which a lens device is able to be detachably mounted, the imaging apparatus comprising:

• an imaging unit configured to include a plurality of photoelectric conversion units that receive light fluxes passing through and incident on different pupil regions in an imaging optical system of the lens device and output a plurality of signals;
• and
• a calculation unit configured to calculate a defocus amount based on a phase difference between the signals output by the plurality of photoelectric conversion units and an imaging surface correction ma generated based on correction information regarding optical characteristics of the lens device and correction information regarding an inclination of an imaging surface of the imaging unit.

A control method performed in an imaging apparatus on which a lens device is able to be detachably mounted, the method comprising:

• imaging a subject by an imaging unit including a plurality of photoelectric conversion units that receive light fluxes passing through and incident on different pupil regions in an imaging optical system of the lens device and output a plurality of signals;
• calculating a defocus amount based on a phase difference between the signals output by the plurality of photoelectric conversion units and an imaging surface correction map generated based on correction information regarding optical characteristics of the lens device and correction information regarding an inclination of an imaging surface of the imaging unit.