1. A digital photographing apparatus comprising: an image capture device configured to generate data from light incident to an object to generate preview images of the object; an electronic viewfinder configured to display preview images; and an information storage unit that stores vision information of a user, wherein the digital photographing apparatus is configured to capture a first image without a pair of corrective glasses of the user and a second image through the pair of corrective glasses of the user, to calculate corrective information for the user based on the difference between the first image and the second image, to distort the preview image to correct for the vision of the user based on the vision information of the user, and to control the electronic viewfinder to display the distorted preview image.