This Donut adapter is perfect for lenses from 58mm to 143mm in front diameter.
Designed for lenses that have zoom/focus travel, this donut will allow up to 2 inches of travel while zooming or focusing the lens.
Clips into any standard matte box with a 143mm opening.
This adapter also allows the use of 138mm Polarizer.
Note: This donut requires the matte box to be mounted to either 15mm or 19mm rails. Please contact us for more information