Irix Edge Circular Polarizer (CPL) filter is extremely useful for landscape and architectural photos. It reduces reflections from non-metallic surfaces, emphasizes details and increases colour density of the pictures. Thanks to the slim and ultralight aluminium frame with knurled edges, filter is easy to operate through filter window and cause no vignetting on Irix 15mm f/2.4. The aesthetic design of Edge filters harmonizes with all Irix products. The glass surfaces of Irix polarizer are covered by multi-coated antireflection layer that keeps the image clear and full of natural colors. The additional waterproof and oil repellent coating prevent from stains, fingeprints and enable using in extreme weather conditions.