A circular polarizer filter is a landscape photographer's most sought-after camera accessory as it helps bring contrast and vivid, natural saturation to a photograph. Normally, a CP is used for landscape compositions featuring water, snow, ice, blue skies, and foliage as it can help darken the sky, remove reflections, and reduce unwanted glare from the scene.  FEATURES Cinema Series™ Glass - Made in Germany. Aluminum - Engineered to withstand a lifetime out in the field. 16 Coating Layers - Anti-scratch / anti-oil / hydrophobic coatings. The 95mm variant has a standard thread pitch - Some lenses will require a coarse thread Step-Up Ring, available here. Adventure Assurance™ - Be satisfied with your PolarPro gear throughout your adventures or your money back.