Kase Wolverine Slim Reverse-Graduated ND Filter (100 x 150mm, 4-Stop)

This 4-stop, 100 x 150mm Kase Wolverine Slim Reverse-Graduated ND Filter is compatible with a Kase 100 x 150mm Filter Holder or other filter holders that can accommodate 100mm wide, 1.1mm thick filters. It can be applied to darken bright skies, specifically during a sunrise or sunset, while allowing for a normal, unaffected exposure in the other regions of the image.