An imaging apparatus is provided and includes a solid-state imaging device including a plurality of photoelectric conversion elements; and a image data-generation unit that generates image data represented by a first luminance signal and a color-difference signal, based on signals from the plurality of the photoelectric conversion elements. The plurality of photoelectric conversion elements include a photoelectric conversion element for obtaining a second luminance signal. In the image data-generation unit, a signal in each pixel position of image data to be generated is interpolated, a third luminance signal is generated in the each pixel position from the interpolated signal, and the first luminance signal in the each pixel position is generated by synthesizing the second and third luminance signals.