Lee 3x3" UV-2B Polyester Filter - Haze(UV) filters protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs.
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. If desired, they can be left on the lens at all times for protection.
The UV (2B) filter is useful for high altitude photography and eliminates almost all UV present.