Marumi DHG Digital Variable ND ND2-ND400 Filters nd filter, filter, nd2-400,200, 400 Marumi DHG Digital Variable ND ND2-ND400 Filter Marumi Digital HG Filters, the digital filter line of Marumi 1 f/stop to 9 f/stops, in Japan known as ND2 to ND400 Designed to be perfect for wide angle digital HD video cameras and HD DSLR cameras. Size available: 58mm,67mm,72mm,77mm nd filter, filter, nd2-400,200, 400