By replacing the cable, the focus-demand can support either Canon or Fujinon lenses. It is not necessary to buy a focus-demand for the respective brands. The knob and the three pins provide a good grip and operability. The resistance of the focus ring facilitates focusing and allows the user to better concentrate on their shots. The reversing switch allows the user to change the focus rotation direction. For your convenience, the focus need can be attached to a right or left swivel handle and offers excellent operability. The unique design and use of aluminium makes the mounting clamp robust and super lightweight. In addition, it is easy to securely attach it to a pan bar.