The Hama Polarizer zircular 72 mm has proved on several trips as a reliable filter. It is optically and mechanically well-made and can be even after several weeks desert (fine sand dust + + often storm) yet easy turning. The glass surface is hard enough, so that will not scratch even with headwinds of sand. Only limited practical is the protruding and shaky nibbling to rotate the filter. On the one hand it is damaged Possibly the camera bag when the filter remains on the lens, on the other hand it tends to break off the thread. In combination with a lens hood, the polarizing filter can be rotated only without nibbling. Nevertheless, the polarizing filter is recommended total.
