67mm Variable Fader ND Filter Neutral Density Adjustable ND2 ND4 ND8 ND10 to ND400 for DSLR Canon Nikon Pentax Olympus (ND2 to ND400) Neutral density can be adjusted from ND2 to ND400.It is easy to create different neutral density by rotating the ring. Manufactured by a professional team for photography enthusiasts to provide a very exciting experience. 100% Satisfaction Guaranteed. Apply slow shutter speed under strong sunlight exposure.Large aperture is available to create depth of field easily. Allows for variable light reduction from between 2-8 stops; protect your lens from dust and scratches .Decrease the depth of field by using wider apertures, which helps separate subjects from their background Allows the use of slow shutter speeds, with high speed films or digital cameras, to record movement/image blur in subjects such as waterfalls, clouds or any fast moving subject .To avoid vignetting at wide angle lens, this filter has a special front lens, the diameter of the front lens is larger than that of the rear lens