Polarising filters such as this one prevent your photograph being marred by unwanted reflections from glass, water, and other surfaces which scatter light.
The B+W Neutral Density+6 F-PRO Digital 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. Moving water is rendered as blurred and 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.
This ND8 filter reduces light by 3 stops (allowing 1/8th of the light to pass though) while maintaining a true colour balance. The thin frame is designed to reduce vignetting.
An ultra-thin and unobtrusive lens protection filter which will help protect your expensive lens glass from dirt, damp, drizzle and damage without affecting light transmission.
This ND16 filter reduces light by 4 stops (allowing 1/16th of the light to pass though) while maintaining a true colour balance. The thin frame is designed to reduce vignetting.