BestDealUSA 82 mm 82mm Fader Adjustable Neutral Density ND Filter Neutral density can be adjusted from ND2 to ND400.It is easy to create different neutral density by Apply slow shutter speed under strong sunlight exposure. Large aperture is available to create depth of field easily. Suitable for dynamic screen, waterfalls, streams, waves, etc. Index marks on the edge of filter for exact adjustment.