1. An imaging apparatus, the apparatus comprising: an image sensor to photograph an object through at least one aperture of a pixel of a display panel; a distance measurement table to store a disparity distance generated by a blur effect generated based on zoom information of the image sensor and a distance to the object; and a distance measurement unit to determine zoom information of an image obtained through photographing the object by the image sensor and at least one disparity distance of at least one area of the obtained image, and to measure the distance to the object included in the obtained image using the distance measurement table, wherein the disparity distance is a distance between two edges having different sharpnesses in the obtained image.