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Hoya 49mm DMC PRO1 Digital Multi-Coated UV (Ultra Violet) Filter.

Product Description :
Designed and engineered for Digital SLR Cameras and Lenses to serve as a lens protector and to reduce the adverse effects of ultraviolet light
Digital Multi Coated DMC -- Greatly reduces lens flare and ghosting
Black Almite Frame BAF -- Black matte finish aluminum frame reduces reflections
Black Rimmed Glass BRG -- Reduces light reflection around the filter edge to enhance contrast
Low Profile Frame LPF -- Ultra thin frame helps avoid vignetting on wide angle lenses and Knurled Edge Frame KEF aids easy attachment and removal