1. A photographing apparatus comprising: an image pickup unit that generates a raw image by capturing a subject; a feature extractor that extracts a feature image containing at least one feature part from the raw image; an image processor that performs image processing of the raw image according to a first scene information, which defines processing for the raw image, and that performs image processing of the feature image according to a second scene information, which defines processing for the feature image; a quantizer that performs discrete cosine transform (DCT) and quantization of a raw-processed image obtained by performing image processing of the raw image and a feature-processed image obtained by performing image processing of the feature image; a difference data generator that generates difference data indicating a difference between image data obtained by processing the raw-processed image in the quantizer and feature image data obtained by processing the feature-processed image in the quantizer on a feature image data basis; and an image compressor that compresses the image data.