Made in japan the hoya revo smc uvo 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