Promaster''s soft graduated neutral density filters allow a photographer to begin with better exposed images, thereby reducing time in post processing and getting great results directly out of the camera. The soft edge design of this graduated filter creates a smooth transition between the bright and dark portions of a scene. Available in two strengths, ND4x and ND8x, the Promaster filters offer anti-reflective multi-coatings, Schott glass, precision machined thin aluminum rings and a rotating mount.