This is a professional quality LCD viewfinder loupe designed for shooting video on a DSLR. The loupe provides an extremely clear, magnified view of the camera LCD, essential when shooting video in daylight conditions. Two viewing modes are provided. Magnification Mode & Standard Mode. Magnification mode provides a 3x view of the LCD via a focusable lens with a comfortable rubber eyecup. Simply flip up the eyepiece to switch to standard mode that provides a hooded (from sunlight) direct view of the LCD. In use the rubber eyecup can be rotated to suit left or right eye shooting. The viewfinder loupe attaches to the camera using a separate (supplied) screen protector. To install the loupe, first attach the screen protector to the camera. The loupe then clips onto the screen protector & can be fitted & removed at any time. A neck lanyard is supplied so the loupe can be carried easily when not attached to the camera. When the loupe is not in use the camera benefits from the installed screen protector. The screen protector can be removed (if the loupe is not intended to be used again) but cannot be re-fitted.