B+W 72mm NEUTRAL DENSITY ND 1; 8 (64X) FİLTRE B+W 72MM ND 1; 8 64X (106) B+W 72mm NEUTRAL DENSITY ND 1; 8 (64X) FİLTRE This B+W Neutral Density Filter reduces the light by six f; stops; With this filter and without changing the f; stop, a shutter speed of 1/60 s is changed to a full second, thus requiring the use of a tripod; Flowing water is rendered as flowing in the photo, and people moving in streets are dissolved in unsharpness or become invisible; Because of its higher transmission in the red beyond 660 nm, this filter brings a slightly warm tone to color photographs; If this effect is undesirable, a B+W UV; /IR; Blocking Filter 486 in front of the neutral density filter (not behind it) remedies that situation; The filter factor is 64x; Single Coating Each glass surface is vacuum coated with one layer of Anti; Reflection coating; This single layer helps to prevent internal ghosting and reflections; It also improves light transmission from approximately 92% (uncoated glass) to over 98%; Neutral Density Filter Number Filter Factor f; stop Reduction Density 101 2 1 0; 3 102 4 2 0; 6 103 8 3 0; 9 106 64 6 1; 8 110 1,000 10 3; 0 113 10,000 13 4; 0 120 1,000,000 20 6; 0;
