Fader ND Suit for ultra wide angle lens.free to rotate to your deserved density 1.This adjustable neutral density filter offers a 2 to 8 stops added density. Density changes when filter is rotated (similar mechanism to a CPL filter).2.To avoid vignetting, we use 2 stop larger front glass. e.g. a 67mm Fader ND, equips with a 67mm back thread (attach to camera lens), and a 77mm front glass/ filter ...
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