The Z-Finder Pro 3x is another one of Zacutos Optical Viewfinders that allows DSLR cameras to have the correct form factor for video. It offers 3x focusable magnification (a 2.5x magnification is available), an eyecup preventing extraneous light leakage, a diopter and a field of view perfectly matched to 3″ LCD screens. The diopter allows you to dial in the focus to match your eye perfectly. If you need extra focal point you can use the Z-Finder Extender Frames. The Z-Finder Pro 3x has a diopter range of -2.75 and up (unlimited with extender frames). These are semi-permanently stackable frames that attach to the skirt of the Z-Finder Pro and extends the Z-Finder glass further way from the LCD screen for people who are farsighted. The Z-Finder Pro ships with an anti-fog coating protective cover over the lens. These covers are expendable as users may lose, scratch or damage these covers over time. See below to purchase additional anti-fog protective covers. The Z-Finder Pro uses Zacuto’s Gorilla Baseplate and Z-Finder mounting frame to mount to the camera. The Gorilla Baseplate attaches to the bottom of your camera using a 20″ screw and the Z-Finder mounting frame attaches to the Gorilla Baseplate using thumb screws. The rubber back mounting frame does not attach to your LCD; it is held in place against your LCD with pressure. This method allows you to quickly remove the Z-Finder Pro by snapping it off the frame. If you want to remove the entire mounting frame from your camera, you can do so by loosening the thumb screws and pulling up on the metal mounting frame to release it. With the Z-Finder Pro, you are also a step closer to using one of Zacuto’s Gorilla Support Rigs, as they use the same baseplate as the base.The Z-Finder Pro includes:3 Extender FramesGorilla Plate with DSLR Short Body Frame (Canon 5D/7D type cameras)Lanyard and Lanyard HookLens Cap & Protective Boot3x Magnification Anti-Fog Coating LensPlease Note: If you are using a battery grip on your small bodies DSLR camera, you will need this battery grip frame (click here). If you have a taller body camera like Canon 1D Mark IV you will need the tall body frame (click here).Warnings:The Z-finder is a magnifier and as such will magnify the sun and could damage the LCD screen if the sun is allowed to shine directly through the Z-finder lens. This is not a defect but a physical property. Caution should be taken to avoid sun magnificationThe tapped holes on the bottom of the Gorilla plate are offset from the center of the lens. This is only a concern if you are using the Gorilla plate with other rigs that need the matte box in line with the lens/mounting screw hole.