Genustech Eclipse Fader ND filter 82mm. This variable neutral density filter is for lenses with a 82mm filter thread. By rotating the filter you can easily fine tune the amount of light entering your lens. The wider front element minimizes vignetting when using wider lenses. The Eclipse ND Fader filter has approximately 2 to 8 stops of ND. The use of new laser technology ensures superior color fidelity and sharpness when compared to competing products.