A photographing apparatus includes a storage device for storing a silhouette image; an image sensor for capturing a first image of an object, the first image including a first object image and a first background image; a comparison module for comparing the first object image with respect to the silhouette image to obtaining a base difference; and a correction module for correcting position of the first object image with respect to the first image to obtain a second image of the object according to the base difference. The second image includes a second object image incorporating with the silhouette image to define a first difference that is smaller than a predetermined value.