Control the focus and iris of your lens when you use optional Teradek RT lens motors with the Zoomrocker S for Teradek RT Lens Motors. Designed for right-hand use, you can clamp this motor controller onto panhandles or other rods from 22 to 38mm in diameter, connecting the rocker to an MDR motor using the included cable. You can use the rocker to control an MDR motor to control the focus, iris, or zoom lens ring, and the built-in start/stop toggle allows you to control compatible cameras.