This is the GGS Swivi Professional Viewfinder Loupe S5 for Video on DSLR Camera [JU1204] 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. The GGS Swivi Professional Viewfinder Loupe S5 for Video on DSLR Camera is designed for the Canon 5D Mk II, the 5D Mk III and the Nikon D90, D7000 and D7100 Features: 3× Optical Magnification Sunshade Hood Adjustable dioptre Rotatable Eye-Cup can fit different eye Adjustable frame fits different camera bodies Detachable mounting plate can be used on tripod directly 3/4? standard screw holes available for other equipments Specification: Lens: 3 piece/group Magnification: 3× Dioptre: ?3 Transmittance: ?90% Lens Aperture: 40mm Support: 3-3.2? 4:3-3:2 Mode: Magnification/ Low-angle Finder ...Contact us if you need more help.