The Hoya REVO SMC UV(O) is a professional quality filter with slim aluminium frame and is manufactured using precision optical glass that is carefully smelted and blended to yield perfect optical results. The REVO SMC UV filters are designed to protect the front element of your lens from dust and knocks, as well as absorb the ultraviolet rays which can often make outdoor photos look hazy and indistinct. The filter features an improved Super Multi Coating formula to greatly reduce or eliminate reflections off the surface of the glass. These coatings are overlaid with a clear water and stain resistant coating that is easy to clean which makes for easier care and handling of the filter in the field. The Hoya Revo SMC UV filters are available in sizes from 37mm to 82mm diameter.