The Tiffen HT 77mm Haze 86 Hi-Trans Double sided Titanium Multi coated filter has been designed with the professional photographer and imaging enthusiast in mind. These digital HT filters with hi-trans double-sided titanium multi-coating surpass even military specifications for hardness and durability. The Tiffen HT 77mm Haze 86 protects your lens and absorbs UV light. Film and video are more sensitive to UV light than our eyes are and this often shows up as a bluish cast in images, especially in shots from high altitudes and long distances, particularly over water. Ultra Violet filters are available in a variety of UV absorption levels.