The Zacuto Electronic Viewfinder (EVF) is a 3.2" high resolution monitor designed to be used in conjunction with any Z-Finder model. The EVF is compatible with all cameras that have an HDMI output, including most DSLRs, the Panasonic AF-100, Sony F3, Canon C100/300/500, RED ONE, RED Scarlet, RED Epic and many, many more. The EVF is compatible with the Blackmagic Camera (and other SDI only cameras) with use of a converter like the Blackmagic HD-SDI to HDMI mini converter. The EVF allows you to operate with your camera "in-line" with your rod system and an offset viewfinder in front of your eye. We believe this traditional film camera and ENG camera style of shooting is the most stable and comfortable. Now we can work this way with any camera! The EVF enhances the stability of any set up, gives you better resolution and focus ability, allows you to get your eye where it most comfortably needs to be, enables low mode shooting, and shortens a shoulder mounted camera package. With an external viewfinder, you're no longer trapped behind your camera. You can have your camera on a dolly or crane or in a car or anywhere and have the EVF in your hand.