The Zacuto EVF is a 3.2” high resolution monitor that is used in conjunction with all the Z-Finder models. The EVF is compatible with all cameras that have an HDMI output including the Panasonic AF-100, Sony F3, RED ONE, RED Scarlet and RED Epic. The EVF allows you to operate the DSLR camera or any camera with an HDMI port, with the correct form factor for video with the camera in-line to your rod system (the most stable way) and your eye in the Z-Finder offset. This is the way all film cameras and ENG video cameras were operated and we, at Zacuto, believe this should be the way DSLR cameras should be operated. It will enhance the stability, give you better resolution, allow you to get your eye where it most comfortably needs to be, enable low mode shooting, shorten your camera package, have your EVF in the back of a dolly or crane, detached from the rig for car shots and more. The Z-Finder EVF Pro is a complete EVF with diopter. It includes the EVF Flip model and an optical viewfinder which will snap onto the frame of the monitor and can flip up 180 degrees. The optical viewfinder contains high quality 2.5x optics with anti-fog shields and a diopter. The anti-fog is extremely important for reducing fog. It will also include extender frames. The Z-Finder Extender Frames allow you to further adjust the focal point of the Z-Finder by semi-permanently stacking the frames via a snap fit onto the skirt of the Z-Finder until the LCD screen is in focus for you.