Marumi 58mm 58 DHG Vari ND ND2 to ND400 400 Neutral Density Fader Filter Japan Digital High Grade Marumi brand. DHG Variable ND2 to ND400 Neutral Density Filter. Steplessly adjust from ND2 to ND400 ND2 to ND400 Exposure Factor : 2 to 400 (1 to 9 F-stops) Double threaded metal frame Made in Japan