The Tiffen 4 x 5.65" Graduated Neutral Density 1.2 Soft Edge filter (Horizontal Orientation) is a graduated neutral density filter that helps to specifically darken skies and other bright areas of the image. nnThe filter is denser at the edge and fades to clear in the middle, with a soft edge transition line between the dense and clear areas. Neutral density filters do not affect the colouration of the image and the 1.2 density offers a 4-stop reduction of light entering the lens.nnThis filter is manufactured using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding it flat to a tolerance of 1/10,000th of an inch. This filter measures 4 x 5.65" / 101.6 x 143.5 mm. nnThe transition line of a horizontally oriented filter is parallel to the long side of the filter.nnGraduated ND 1.2 soft edge filter to darken skies and other bright areas of the image.nnOffers a 4-stop reduction of light in selected areas.nnNeutral density filters do not affect the overall colouration of the image.