https://www.genustech.tv/GP-NK-Lens-Adapter-Ring-with-Nuns-Knickers-p/gp-nk.htm
GP-NK : Lens Adapter Ring with Nuns Knickers for Production Matte Box
Genustech-Genus offers Matte Boxes,(GML-Lite, GWMC Wide Angle 4x4 filters and GPMB -KIT for Production), Filters (Circular Polarizer, Eclipse ND Faders,...
nk lensadapter ring