NiSiåÊPROåÊNanoåÊHUCåÊUVåÊultra-thin filters adoptåÊaåÊdoubleåÊsided,åÊmulti-coating lens technology åÊthat employsåÊhighåÊqualityåÊJapanese ultraviolet absorption opticalåÊglass. åÊItåÊ assuresåÊhighåÊtransmittanceåÊandåÊhighlyåÊsmoothåÊsurface thatåÊavoidsåÊunnecessaryåÊreflection. TheåÊframe is constructed from Brass using highly accurate brass milling. The NiSi PRO Nano HUC UV has anåÊexclusive creative “U” type Nano coating and aåÊhardened waterproof coating.
The UV filter is also useful as a general protective filter to leave on lenses at all times. Filters help to reduce dust and moisture from reaching your lens element and provide additional protection in case of drops or situations where scratching could occur.