An object is to improve noise reduction. Provided are an image-capturing-mode selecting portion (104) that selects one image-capturing mode from a plurality of image-capturing modes and a noise-reduction processing portion (110) that performs noise-reduction processing for input image signals by employing, in the case in which the image-capturing mode selected by the image-capturing-mode selecting portion (104) is a specific image-capturing mode, an applied noise model in which a noise model employed for a predetermined signal-value region differs from a reference noise model determined on the basis of properties of an image-acquisition element.
