JJC 77mm ND Filter ND2-2000 VND Variable Neutral Density Fader for Canon EF 16-35mm f4L, EF 24mm f1.4L II, Sigma 24mm f1.4 DG HSM, Nikon AF-S 20mm f1.8G ED Lens & Other Lenses with 77mm Filter Thread - VND2K77

• Darkens entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required, suitable to record movement/image blur in subjects such as waterfalls, streams, waves, clouds or any fast moving subject Eliminates buying many fixed ND Filters as it is designed with a built-in rotating ring that controls neutral density ranging from ND2 to ND2000 (1 to 11 f-stop). The heavier the density, the slower your shutter speed will be When using this variable ND filter at high ND values (9 f-stop or above) on wide angle lenses, it would appear "X" cross mark, vignetting, reflections or blur in the picture, this is unavoidable according to the structure and operating principle of a variable ND filter. If this is not acceptable to you, please go for a non variable ND filter, for example, a popular JJC brand fixed ND1000 10 f-stop ND filter The filter is constructed from German famous brand optical glass that features 9 layers of anti-reflection coatings on each side(total 18 layers), making the filter anti-scratch, anti-static, oil and water-resistant Compatible with any lens with 77mm diameter filter thread - This variable ND filter is double threaded, has 77mm inner thread(male) and 82mm outer thread(female), this design allows you to put on any 82mm thread accessories such as lens cap, screw-in type lens hood to the front of the filter