Turn your camera lenses into movie lenses with the ND Lens Gear Medium from Zeiss.
No additional tools required, this geared, aluminium ring simply slides onto any lens measuring 78-84mm in diameter to allow compatibility with all follow focus systems for smooth, precise focus pulls.
The ring comes supplied with a rubber-covered band called a GumGum to add protection and reduce the diameter of the inner ring to support the use of smaller diameter lenses measuring 76-82mm.