Smooth focusing gives extreme experience. Use professional program to realize smooth and precise focusing during shooting video or photography.It can receive and operate all commands accurately; thereby camera lens can be moved smoothly. It is the best tool for MTV, short film, wedding photography and so on. Professional dampening design. Center control wheel uses high quality material and professional dampening design, brings you an extremely new experience. The appearance of center control wheel adds new graininess and finger groove design, you can adjust better. Switch focus points rapidly. In video mode, V-Control S can save /delete / switch A/ B/ C/ D focus points and that can be displayed on LED. Multiple focus speed options make work more efficiently. Apply to shift various focus points frequently. Precise exposure control In Still mode, V-control UFC-1S enable you adjust ISO, aperture, shutter speed, exposure compensation. Supports firmware update Enhance whole performance stability, and expand CanonÕs future cameras compatibility.