The iDC PhotoVideo Viewfinder for the Canon EOS 5D Mark II helps you focus images on your 5D Mark II camera's display screen. Rugged aluminum construction helps ensure quality and longevity. By eliminating glares and shadows from your LCD screen, you'll be able to better focus your image even in full overhead sunlight. This unit will provide full coverage of an LCD display screen up to 3.0" (7.6 cm) diagonally with a standard (4:3) aspect ratio. The included Hoodman Loupe allows for secure mounting and is easy to dismount with a few simple twists of the handy thumbscrews. Mounting hardware is also included.