Fotga Lens Donut Kit for DP3000 M3 Matte Box

Set of Lens Adapter Ring (103mm,76mm,64mm,51mm) for DP3000 M3 matte box.

A set of 4 “donut” rings are included.(Size at 103mm,76mm,64mm,51mm).By using one of these rings, light from the rear of the matte box can be blocked out, leaving only the camera lens protruding through. Donuts are slightly flexible, and the four sizes range to fit almost any lens diameter.