Buy from Amazon.com : http://fave.co/1EK6VP7

Marumi 52mm 52 DHG Vari ND ND2 to ND400 400 Neutral Density Fader Filter Japan Digital High

Product Description :
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