Opteka FFR-900 Motorized Remote Follow Focus & Zoom Controller with Shoulder Support Rig for Digital SLR Cameras and Camcorders Motorized zoom and focus control leads to smooth focusing and zooming Bundled shoulder support rig stabilizes video and alleviates fatigue over lengthy shoots Includes two gear belts with adjustable clamps to fit any camera/lens setup Focus and zoom control (with sensitivity control) conveniently located on hand grips of the rig Adjustable sensitivity of focus and zoom control