The ND Fader is a compact, all-in-one variable neutral density filter that adjusts the amount of light reduction with just a twist of the wrist. The index markings on the filter let you know the exact amount of reduction at a glance. Get clear and precise images no matter what density you use. It can freely adjust neutral density from ND2 to ND400. You only need to carry a single filter with the same capacity as ND2, ND4, ND8, ND16, ND32... and ND400. It gives you the freedom to create different neutral densities freely. The reduction number and transmittance generated can be applied for different shooting conditions, such as portraits, waterfalls, fountains, etc. Feature - Color: Black - Material: plastic and glass - Size: 15 x 1.7 x 10 cm - Double anti-reflective treatment, only 7mm thick ultra-thin frame - Enables variable light reduction between 2-8 stops; protect your lens from dust and scratches - Reduce depth of field by using wider apertures, helping to 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 on wide-angle lenses, this filter has a special front lens; the diameter of the front lens is larger than that of the rear lens