1. An image processing method comprising: generating a screen nail image using RAW data output from an image sensor of a digital photographing apparatus before recording a raw image corresponding to the RAW data; detecting a predetermined face region of the screen nail image; generating a face screen nail image from the screen nail image using coordinates of the detected face region; and recording the raw image from the RAW data in a predetermined recording medium of the digital photographing apparatus in response to a selection signal for the screen nail image or the face screen nail image.