S6 Landscape NC CPL Kit for Sigma 14-24mm Since I haven't used it much, there are no noticeable scratches or stains. Thank you. The S6 filter system was specially developed for landscape photographers who want to combine ultra-wide-angle lenses with multiple filters. It supports an integrated Landscape NC CPL and two 150mm (2mm thick) filters, and the CPL rotates 360° without vignetting. The improved locking system makes it easier to position the main filter holder. The included Landscape NC CPL is ideal for landscape photography. The S6 design suppresses ghosting and lens flare by applying a special matte finish to the main adapter. The geared mechanism allows you to rotate the CPL even with a 150mm filter attached. The adapter can be quickly attached and detached without removing the lens from the camera. #nisi #filter #camera #cpl