Genustech Nuns Knickers for PMB

The GP-NK Nun’s Knickers Do-nut Adaptor Ring (so called as an in-dustry tongue-in-cheek nick-name) from Genus is a do-nut ring fitted with a black-out fabric cover that wraps around the barrel of your lens to block out any light completely. The 120mm inside diameter and 124mm outside diameter plastic ring fits snugly into your matte box and the elasticated fabric cover wraps around the barrel of your lens.