Helloo LCD Viewfinder V1 2.8x 3" 3:2 for Canon 5D, 5D Mark II 7D 500D Suitable for most 3" LCD screens DSLR Cameras Magnifies LCD screen Removable, Compact Suitable for most 3" LCD screens with up to 60mm X 45mm viewable area. Rubber eye cup Compatible with Canon 5D MarkII, 7D, & 500D cameras