Vocas Flexible Adaptor Ring Kit (144mm)

The Vocas Flexible Adaptor Ring Kit (144 mm), which includes an adaptor ring and holder for an additional 138 mm round filter, is compatible with the MB-450 mattebox. It also includes exchangeable flexible soft rubber rings (donuts). The adaptor ring prevents light from leaking between the lens and the rear end of the MB-450 (when used on a rail support).

Using a quick lock system, the adaptor ring securely attaches lenses with a front outside diameter of 80 to 138 mm to the mattebox. When used in combination with the holder for the additional 138 mm round filter, the adaptor ring allows for a maximum lens diameter of 133 mm.