The Cavision Focus Gear Ring CARFGR95 can be clamped onto a lens's focus barrel, allowing for the use of a follow focus system. This ring will fit focus barrels with an outside diameter of 92 - 96 mm and is compatible with the Fujinon gear type (0.6 pitch).
Size is determined by measuring the focus barrel's diameter, or by measuring the circumference and dividing by 3.14.
Note:
This gear ring does not include hard stops.