This is the GGS Swivi Professional Viewfinder Loupe S3 for Video on DSLR Camera [JU1202] The Swivi is a series of professional optical LCD viewfinders designed for video shooting on DSLR cameras. The Swivi viewfinder provides an extremely clear, magnified view. Essentially it is ideal when shooting video in daylight conditions. It has 2 different modes: Magnification and Standard. Magnification mode provides a 3x magnifying view on LCD. Simply flip up the eyepiece to use as a sunshade hood. The rubber eyecup can be moved to a different direction for different eye. Viewfinder attaches to the camera by using included adapter frame. It works by attaching the mounting plate on the tripod thread under the camera, the plate and the viewfinder frame can be adjusted in all directions to fit different camera bodies even those equipped with a battery grip. The Swivi is a series of professional optical LCD viewfinders designed for video shooting on DSLR cameras. The Swivi viewfinder provides an extremely clear, magnified view. Essentially it is ideal when shooting video in daylight conditions. It has 2 different modes: Magnification and Standard. Magnification mode provides a 3x magnifying view on LCD. Simply flip up the eyepiece to use as a sunshade hood. The rubber eyecup can be moved to a different direction for different eye. Viewfinder attaches to the camera by using included adapter frame. It works by attaching the mounting plate on the tripod thread under the camera, the plate and the viewfinder frame can be adjusted in all directions to fit different camera bodies even those equipped with a battery grip. The GGS Swivi Professional Viewfinder Loupe S3 for Video on DSLR Camera is designed for the Canon 5D MkII, 5D MkIII, the Nikon D90, D7000 and D7100 Features: 3× Optical Magnification Sunshade Hood Adjustable dioptre Rotatable Eye-Cup can fit different eye Adjustable frame