B + W 37mm Master 803M ND 0.9 3-Stop MRC Nano Neutral Density Filter #66-1101551

Reducing the amount of light entering the camera Suitable for both analog and digital cameras Selective sharpness by achieving larger apertures - ideal for portraiture Long exposures producing a cotton candy effect on moving water and deserted streets void of people and cars Wipe effects, continuous light trails Made in Germany