2.8 x 43 DSLR Camera LCD Screen Viewfinder Extender for Canon EOS 5D II 7D 500D 50D Nikon D7000 D300s Optical viewfinder is designed for LCD screen viewing, outdoor shooting and viewing the photo Allows the use of shoot in bright outdoors, Avoid screen glare Especially suitable for DSLR high definition video photography. Using magnetic Material, Mounting and remove without any wear and tear. Magnification: 2.8X