This is a great addition to any mobile studio. It helps to turn your DSLR LCD screen into a huge electronic viewfinder for precise image evaluation and transforms your video enabled DSLR into a discreet handheld video camera. * Aids on the fly focusingallows the use of LCD in bright daylight outdoors * Magnification X2.8(220%) * Package includes (1) viewfinder with an eye cup and magnifying lens (2) magnetic mounting bracket (3) Smart magnetic mechanism, and camera tripod mount attaching. (4) Carry Pouch * For 3 inches and 4:3 LCD camera: such as Canon EOS 5D Mark II / 7D / Nikon D700 D300s D90,