LENSES & FILTERS Filters Neutral Density Filters B+W 39mm Neutral density ND 0.6, F-stop +2, Factor 4x, MRC nano XS-Pro (802) B+W 39mm Neutral density ND 0.6, F-stop +2, Factor 4x, MRC nano XS-Pro (802) More photos (2) PreviousNext 6 points to the loyalty system 10 years warranty Availability Product is no longer available Manufacturer B+W Product code 794059 Description Discussion Selected parameters Filter Size 39 mm ND factor ND 4 f-stop Reduction 2 steps EV Send