The new T-PRO filters are designed for compact camera equipment, a slim profile and a modern look. They are ideal for all focal lengths including telephoto and wide angle lenses. As with all B+W Filters, T-PRO filters are made of strong brass. The popular high-transmission Clear and UV-Haze filter types are well suited for protection and can prevent damage to expensive lenses. The UV-Haze filter also significantly reduces pollutants and removes an unwanted blue cast.