When using large sensor cameras, sooner or later, there will be a shot in which the operator will need some help following focus! There are manual options that attach to the camera, and there are wireless options that free the operator from the focus puller. If you're shooting with Steadicam or on a crane, you'll more than likely need a wireless lens control option.
C-motion have making some of the best lens control solutions for over a decade; with some of the most advanced features on the market. Their devices are modular and can grow as your needs develop. Join Steve Chappell as he explains the entire system to Curt Pair and Band Pro Film & Digital, Inc.