a pixel array comprising a plurality of shared pixels that share a floating diffusion node, each of the shared pixels comprising sub-pixels covered by one micro-lens, and receive light reflected from an object;

a memory storing shift information of a micro lens of each of the plurality of shared pixels; and

an image processing unit configured to compensate for a capture image generated from the plurality of shared pixels using the shift information and generate a compensated capture image,

wherein the plurality of shared pixels are configured such that exposure time is controlled based on a degree of an image brightness change associated with the compensation of the capture image.