With the T-PRO filter line, it has been possible to adapt the design to the increasingly compact camera equipment and to create a slim profile. The titanium-colored finish gives the filter line a special touch and is optimally suited for all focal lengths, including wide-angle and telephoto lenses. The special functional coating facilitates the screwing and unscrewing of the filter with its sliding properties. The base material of the filter frame is, as usual with B+W, made of sturdy brass. The manufacturing is carried out at the highest level with minimal tolerances.