A digital single lens reflex (DSLR) camera is provided for displaying predetermined photographing information, including focus information, camera information, etc., on a display screen of a viewfinder. The DSLR camera includes: the viewfinder for observing an image of an object; a pentaprism outputting the image of the object to the viewfinder; and a display device disposed on a side of the pentaprism to display photographing information.