... that allows you to adjust neutral density freely from ND2 to ND400, providing 2 to 8 stops added density. Perfect to create slow shutter ... sun lightUsing of large aperture under bright conditionEasier to control Flash output . Offers 2 to 8 stops added densityNo more carrying of a ... for shooting. one filter, give you from the range ND2 to ND400.size:52mm,55mm,58mm,62mm,67mm,72mm,77mm,82mm ...