The Hitech 150 x 170mm 1.2 ND Soft Graduated Filter is a soft-edged neutral density filter. The 1.2 density helps to darken skies and other bright areas of the image. The filter is densest at the edge and softly tapers to clear by the middle of the filter. Neutral density filters do not affect the coloration of the image.
The 1.2 density provides a 4 stop reduction in light from entering the lens. The filter measures 5.9 x 6.7" / 150 x 170mm and is constructed from CR-39 dyed resin.