Nisi 52 mm Ulta Violet Lens Filter

Nisi's UV ultra-thin filters Equipped with Japanese superior glass with highly smooth on the surface . Meanwhile the frame is made of high quality aluminum (thickness only 5.2 mm) its the thinnest in the world so far. Additionally superfine dull polishing and elaborate knurling make sure that the frame will not blanch because of repeated rotation; this ultra thin filter frames to help avoid vignetting on super wide angle lenses. All materials used in this filter meet the requirements of European Unions standards of environment protectionROHS(Restrictions on Hazardous Substances) No hazardous. Furthermore screw thread in front of the frame makes it easy to fix the lens cap and other accessories.