The Hoya HD Nano Mk II 77 mm is a polarizing filter designed to eliminate unwanted reflections from water, glass, and other non-metallic surfaces while simultaneously improving contrast and color saturation in outdoor shooting. Part of the HD Nano Mk II series, the Hoya HD Nano Mk II polarizing filter is intended for photographers and videographers using lenses with a 77 mm filter thread. The Hoya HD Nano Mk II CPL features chemically strengthened optical glass with 32 layers of anti-reflective and hydrophobic coatings, which the manufacturer states provide high resistance to scratches and breakage. The HD polarizing film reduces exposure by 1 stop, while the hydrophobic and oleophobic coatings resist water spots and fingerprints, minimizing cleaning requirements. It is suitable for outdoor photography of landscapes, vegetation, rivers, and lakes, and facilitates shooting glass surfaces in automotive, architectural, and product sectors where reflections on windows or bodywork tend to compromise the framing. The 77 mm CPL polarizing filter includes a protective case for transport and storage. Always verify the lens filter diameter before ordering, then purchase the Hoya 77 mm CPL filter on Martcom to complete your lens kit.