A polarizer filter helps eliminate ultraviolet rays from outdoor shots and also polarizing the light to remove reflections and increase color saturation. So get this polarizer filter as it can be the best way to make the clouds stand out, increase or decrease the saturation of the ocean or the reflection off the water. Digital Multi-coating The digital multi-coating helps reduce the appearance of flare and ghosting that is caused by reflections, thereby giving you that perfect photography.  Black Almite Frame This filter features a black matte aluminum satin finish almite frame, which reduces the reflections and glare by filtering out lights.  Black Rimmed Glass The black rimmed glass lessens the chance of light reflecting off the edge, while the ultra-thin filter frame avoids vignetting on wide angle lenses. Knurling Edge frame This filter features a knurling edge for a non-slip, easy attachment and removal of the filter from the lens. The UV protected case greatly increases the life of the filter.