The Tiffen Soft-Edge (Horizontal Orientation) Graduated ND Filter (4 x 5.65", 4-Stop) is a graduated neutral density filter designed to specifically darken skies and other bright areas of an image. The filter is densest at the edge and gradually tapers to clear by the middle, creating a soft-edged transition between the dense and clear areas. Neutral density filters do not affect the coloration of the image, and the 1.2 density provides a 4-stop reduction in the amount of light entering the lens.
Construction and Design
This filter is made using ColorCore technology, a process that involves laminating the filter substrate between two pieces of optical glass and grinding it flat to a tolerance of 1/10,000th of an inch. The filter measures 101.6 x 143.5mm.
Note
A horizontal orientation filter has a line of transition that runs parallel to the long side of the filter.
