1. An apparatus comprising: circuitry configured to: determine an attention region of an image that includes an intended subject of the image; and blur all image regions outside of the attention region, wherein the attention region is determined to be a region including a most focused position in the image when a single focus position is determined to be contained in the image and/or when a focal length corresponding to the image is equal to or exceeds a predetermined threshold, and the attention region is determined by considering a plurality of focus positions in the image when the plurality of focus positions are determined to be contained in the image and when the focal length corresponding to the image is less than the predetermined threshold.