Product Highlights Control focus & iris on Teradek RT lens motors. Pair with Zoomrocker X for complete lens control. Configure to any axis. Built-in run/stop control. Supports 22mm to 38mm rods. Right hand version. Overview Zoomrocker S is an ergonomic, single-hand controller for focus & iris pulling via a wired connection any RT MDR. Clamp securely to rods between 22mm and 38mm and control any lens axis with ease. Zoomrocker S is the right hand unit.