OVERVIEW 0.8 MOD Gear for Cine Follow Focuses 49.5 to 51.5mm Diameter for Focus/Zoom Fully Closed and Requires No Screws Even Pressure, No Drifting, Accurate Tiltas 49.5 to 51.5mm Seamless Focus Gear Ring allows you to add 0.8 MOD gears to a compatible lens for use with cine follow focuses. This 49.5 to 51.5mm size fits virtually all lenses of the same outer diameter. The seamless version is designed with an improvement over Tiltas earlier gear rings in that its fully closed and requires no screws in order to be secured to the lens. As a res