The NiSi 100mm Alpha Filter Holder for Laowa 12mm f/2.8 (No Vignetting) is specifically designed for the Laowa 12mm lens and is made from aviation-grade aluminum. The holder is compatible with 100x100mm or 100x150mm filters from NiSi and brands including (Lee, Sing-Ray, Cokin, etc) and supports 2 filters.The NiSi 100mm Alpha Filter Holder for Laowa 12mm f/2.8 (No Vignetting) has no vignetting. It features left to right pressed clips taken from our popular V6 holder, rather than traditional top and bottom design. It is very smooth to insert and remove filters.It is made from aviation-grade aluminum processed by CNC machine. This NiSi 100mm Alpha Filter Holder for Laowa 12mm f/2.8 (No Vignetting) comes complete with a holder and adaptor for the Laowa 12mm. The matte black frosted finish on the surface to minimize reflection.