The B+W 72mm XS-Pro 803 MRC Nano ND 0.9 Filter (3-Stop) is a high-quality neutral density filter designed to reduce light by three stops, allowing for longer exposures in bright conditions. Its MRC Nano coating provides exceptional anti-reflection properties, minimising flare and ghosting. Made from Schott optical glass, the filter delivers consistent colour balance and high image quality. The brass ring with enhanced top knurling ensures a secure and comfortable grip.