A photographing apparatus comprising: a lens; a beam splitter for splitting light passing through the lens into light in a first direction and light in a second direction; a first image sensor for sensing light traveling in the first direction and outputting first image data; a second image sensor for sensing light traveling in the second direction, and outputting second image data; a display unit for displaying image data; and a controller configured to: adjust the exposure value of the first image sensor and the exposure value of the second image sensor; detect whether a malfunction of the first image sensor has occurred; synthesize the first image data and the second image data to display a synthesized image data on the display unit, when malfunction of the first image sensor is not detected; wherein the controller is further configured to: when malfunction of the first image sensor is detected, adjust the exposure value of the second image sensor to that of the first image sensor and display the second image data on the display unit;; wherein the controller is configured to detect malfunction of the first image sensor when the first image data is not received from the first image sensor. a lens; a beam splitter for splitting light passing through the lens into light in a first direction and light in a second direction; a first image sensor for sensing light traveling in the first direction and outputting first image data; a second image sensor for sensing light traveling in the second direction, and outputting second image data; a display unit for displaying image data; and a controller configured to: adjust the exposure value of the first image sensor and the exposure value of the second image sensor; detect whether a malfunction of the first image sensor has occurred; synthesize the first image data and the second image data to display a synthesized image data on the display unit, when malfunction of the first image sensor is not detected; wherein the controller is further configured to: when malfunction of the first image sensor is detected, adjust the exposure value of the second image sensor to that of the first image sensor and display the second image data on the display unit;; wherein the controller is configured to detect malfunction of the first image sensor when the first image data is not received from the first image sensor. adjust the exposure value of the first image sensor and the exposure value of the second image sensor; detect whether a malfunction of the first image sensor has occurred; synthesize the first image data and the second image data to display a synthesized image data on the display unit, when malfunction of the first image sensor is not detected; wherein the controller is further configured to: when malfunction of the first image sensor is detected, adjust the exposure value of the second image sensor to that of the first image sensor and display the second image data on the display unit;; when malfunction of the first image sensor is detected, adjust the exposure value of the second image sensor to that of the first image sensor and display the second image data on the display unit;; wherein the controller is configured to detect malfunction of the first image sensor when the first image data is not received from the first image sensor.