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 camera and a disparity distance of the obtained image, and to measure the distance to the object included in the obtained image.