Tiffen Protection and UV Control filters offer you protection from dust, scratches, dirt, moisture, fingerprints, as well as absorb UV light. Film and video are more sensitive to UV light than our eyes are. This often shows up as a bluish cast in images, especially shots from high altitudes and long distances, particularity over water. Ultra Violet filters are available in a variety of UV absorption levels. These filters can be kept on your lens at all times.