Wireless follow focus. The ultimate in freedom of motion. You should try it by renting the RedRock Micro Wireless Follow Focus Kit. Turn an oversized knob wirelessly connected to a motor with gear adapter on your camera system and watch your lens focus in direct proportion to your movements. Give the remote to a dedicated follow focus puller while you operate the camera system, or mount and use the included finger wheels to control the focus of the unit yourself while operating via a shoulder rig. Just make sure you get the right lens gears for the awesome glass you’re shooting with.

Redrock Micro Wireless Follow Focus User manual (pdf download)