The B + W 60mm 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.
Reviewed by 1 customers
This is a must have accessory in maximizing DoF control for daylight use. Fast lenses such as the Leica Noctilux require reduction of the light in order to use the lens at maximum aperture. When shooting outdoors an ND4 or ND8 filter is just not enough for such fast lenses. This filter provides just the right amount of light reduction.