Calumet Foldable LCD Viewfinder Loupe A professional LCD Viewfinder loupe designed for use with DSLR cameras. The loupe provides an extremely clear magnified view of your DSLR's LCD, especially when shooting video in daylight conditions. Magnification provides a 3x view & a diopter means that you can adjust the lens focus. The viewfinder also features an ergonomic silicon rubber eyecup. Simply flip up the eyepiece to switch to the your typical view of the camera's LCD screen. The viewfinder loupe comes with a quick release mounting plate. To install the loupe, attach the mounting plate to the camera's mounting plate. The loupe clips onto the mounting plate & can be easily removed.