B+W Grey ND 0.9 MRC nano 39 mm Filter

This B+W filter reduces light by three f-stops. It is particularly useful for video when an appropriate aperture value cannot be set in high lighting conditions or when a shallow depth of field is desired. With this filter strength, a clear flow effect with water can already be observed. The B+W 803 Grey ND 0.9 filter is also ideal for shots with fading effects.