Custom Mattebox Clamp-On Ring / Donut


Mattebox Clamp On Adapter Ring - Made custom for your lens size to eliminate glare and light spill, while still enabling the use of a circular filter on your lens.


  • Easy to put on and take off /
  • Same high quality materials and high precision as our Follow Focus Rings - makes for a great fit. 
  • Much more affordable and universal than other options
  • Fully custom for your lens
If ordering the "Custom" variation, keep in mind you need to measure the front of the lens yourself. Filter size will not work!