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 of long distances, particularly over water. UV filters help protect your camera lens against dust, moisture, fingerprints, scratches and damage. They can be kept on your camera at all times. The Haze 1 filter reduces excessive blue by absorbing almost three quarters of UV light. The Haze 1 filter is considered to be the best general purpose filter, by protecting your lens along with elminating UV problems from most situations where increased haze tends to wash out color and image clarity.