Specifications Stabilizes camera when shooting handheld and aids in fly focusing Allows the use of LCD in bright daylight and out of doors Magnification of 200% Specially tailored to most 3in LCD Screens AR coated and optically corrected lens with 40mm clear aperture Robust and Durable: no moving parts Design allows left or right eye usage Allows the use of battery and wireless gripCompatible Models 3 inches and 3:2 LCD camera: such as Canon 550D and T2iDirections Start with camera recording approximately 12 minutes before applying. While you apply the interface frame set your camera to the brightest display setting. Without removing the paper backing， please practice placing the frame over your cameras screen. We recommend that the round filleted tab should be in the upper right corner when applied. Remove the paper backing and carefully attach the frame to the camera body. Be sure to that the frame is evenly placed around the LCD screen Apply pressure (gently massage with your fingertips) to ensure a better bond between the frame and your camera. Leave a weight on the freshly applied frame and leave your camera running for at least 15 minutes so the heat generated will ensure a better fit. Initial bond strength of approximately 76% is achieved after 15 minutes