B+W 810 ND3.0 MRC nano 100x100mm Filter

The B+W 100 x 100 mm XS-Pro MRC-Nano 806 Solid Neutral Density 3.0 Filter is an ND filter with a 1000x filter factor that provides a 10-stop exposure reduction. It is compatible with a B+W 100 mm Filter Holder and its 3.0 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required.

Price: 186.95 from Wex Photo Video