The Hitech 85mm UV 1A Absorbing Resin Filter helps protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs. If desired they can be left on the lens at all times for protection. Haze filters provide additional benefits of correction for Ultraviolet (UV) light which can register on film and videotape as a bluish cast and can obscure distant details.
Ultraviolet filters allow you to correct for the UV effect to varying degrees. Haze-1 filters absorb approximately 71 percent of UV. This is an 85mm square UV (1A) filter made from CR39 optical resin and is specific to the Cokin P-series filter holder.