Darken the brightness of the sky while capturing pictures of the landscapes with the 150 x 170mm Very Hard-Edge Graduated Neutral Density 0.3 Filter from LEE Filters. This neutral density filter has a filter factor up to 2x and provides a 1-stop reduction in exposure entering the lens without affecting the overall coloration of the image. With dark edges and clear in the middle, this filter is designed to darken the excessive bright elements such as the sky without affecting the other parts of the image. This filter has a very hard-edge line of transition to define the horizon in images that have seascapes and extremely bright skies. It is ideal to use with SW150-Series Filter Holder.