A new step in photography. NISI, the perfect choice for landscape photographers who want to get closer to the world of ND and GND filters by using a professional high definition system with optimal bright and high quality nano IR optical lenses. New system of sliders by pressing on both sides of the filter door and new mounting screw for CPL filter included CPL PRO polarising filter 86 mm to prevent any vignetting to 16 mm Accepts filters 100 mm and up to 2 mm thick (Lee, Cokin filters etc. ...) Storage box included