NEEWER 77mm Variable ND Filter ND2-ND32(1-5 Stops) Adjustable Neutral Density Filter/No X Cross/Ultra Slim Aluminum Alloy Frame/Optical Glass/Multi Layer Nano Coated/Water Repellent/Scratch Resistant 1-5 Stops Variable ND Filter: The NEEWER ND2-ND32 Variable Filter is adjustable from 1 to 5 stops, with a rotating ring to reduce light intake and extend exposure time when shooting at slower shutter speeds and wider apertures. Perfect for capturing rivers, waterfalls, light trails and other moving subjects with dynamic motion blur High-end Materials and Design: Imported Japanese AGC 4-element optical glass ensures optimal neutrality and accurate color contrast and reproduction. Ultra-slim CNC non-slip aviation aluminum frame prevents wide-angle vignetting and ensures durability and anti-snagging. Double-sided Multi-layered Nano-Coatings: With 30 layers of Nano coating, the minimum light reflection rate is less than 0.1%, which reduces glare and ghosting, and also blocks UV rays from 300 to 380nm, while ensuring accurate color reproduction. Waterproof, oil-proof, dirt-proof and scratch-proof.