[5 of 5 customers found this review helpful]
Comments about B + W B + W 77mm #501 Color Graduated Filter - Light Dark Grey Neutral Density (ND):
For nature and scenic photography a split neutral density filter is a must. I have always been pleased with the solid construction and excellent optics of B+W filters. My only complaint with this unit is the tightness of the turning ring with the filter right out of the box. To avoid problems in use, a drop of silicon lube carefully spread around the join between the turning ring and the mount base ring solves the problem. That's why it gets 4 rather than 5 stars.