1. An apparatus for processing an image, comprising: a camera capturing an image according to first photographing information; a buffer storing a plurality of frame images; an image processor processing the image captured by the camera during a preview mode and obtaining second photographing information when processing the image captured by the camera; and a control unit outputting the first photographing information during the preview mode, storing the first photographing information and the second photographing information with the corresponding frame image in the buffer, and outputting a predetermined frame image and the corresponding the first and second photographing information to the image processor during a capture mode.