LENSES & FILTERS Filters Neutral Density Filters B+W 40.5mm Neutral Density ND 0.3, F-stop +1, Factor 2x, MRC F-Pro (101M) B+W 40.5mm Neutral Density ND 0.3, F-stop +1, Factor 2x, MRC F-Pro (101M) 6 points to the loyalty system 10 years warranty Availability Product is no longer available Manufacturer B+W Product code 794002 Description Discussion Selected parameters Filter Size 40.5 mm ND factor ND 2 f-stop Reduction 1 step EV Send