There is provided an image processing apparatus including an image information combining unit that performs a pixel value combining process on a long-time exposure pixel and a short-time exposure pixel. The pixel information combining unit calculates a plurality of blending ratios based on pixel values of a plurality of pixels of different periods of exposure time, determines an applied blending ratio, which is applied to a blending process for the long-time exposure pixel and the short-time exposure pixel, based on the plurality of blending ratios, and determines pixel values of an output image or an intermediate image which is applied to produce the output image, by the blending process for the long-time exposure pixel and the short-time exposure pixel to which the applied blending ratio is applied.