Be confident with your focusing by using the OptiView 250 3.2" LCD Viewfinder to magnify your camera's display by 300%. This viewfinder is compatible with most 3.0" and 3.2" displays with either 3:2 or 4:3 aspect ratios. It also blocks light from hitting the screen, ensuring crisp, clear viewing even on bright days. For enhanced operation, it features a quick release plate with a 1/4"-20 screw for mounting to the camera along with an interchangeable and adjustable rail system to dial in compatibility with your camera. The attached short rail works with most cameras, while the included long rail enables use with cameras featuring battery grips.