Apparatus and method for generating a wide dynamic range image by executing a pixel value combination process of a plurality of different exposure time setting pixels. Control of a different exposure time is performed for each of a plurality of pixels of the same colors configuring a pixel block and an addition pixel value obtained by adding outputs of the plurality of pixels of the same colors of the pixel block is generated. The generation of the addition pixel value is executed by an adding unit that adds the outputs of the plurality of pixels of the same colors of the pixel block. Or, the generation of the addition pixel value is executed by a floating diffusion set in a pixel block unit and a charge output from each of the plurality of pixels of the same colors configuring the pixel block is accumulated and output in the floating diffusion.