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 2A filter absorbs virtually all UV light. It also reduces haze more than the Haze 1 filter and is perfect for use in high altitudes, along bodies of water, aerial shots, mountain scenes and marine scenes. The Haze 2A filter will maintain the color and clarity of your image, and allow you to capture more of what you truly intended.