At first I was skeptical, though a polarizing filter in textbooks for landscape photography is recommended However, the high price deterred me more. But since I really like the sky with all its colors and Scan also like recordings of waters of any kind mache- all of course with holiday pictures on the sea or in lakes I was now not avoid to test the filter. I was actually surprised how effective the filter is yet. The sky will become more intense in its colors, the reflections on the water softened ... everything can in its intensity by little to a lot by simply turning the filter can be adjusted. Prone to fingerprints, he does not seem to me. Also, the on-and unscrew is quite easy. He swallows some light, but it was clear to me and can be ausgeglichem by increasing the aperture setting. Last but not least it protects the expensive lens even from scratches, dust ect. Only the - in my opinion - to high price gives rise to criticism. Everyone should just weigh for themselves whether the filter requires frequent enough so that the price calculated?