bought the polarizing filter from K&F and I am absolutely delighted. This is not my first filter from K&F and I have to say that the quality of the company impresses me every time. The workmanship of the filter is first-class. It feels robust and high-quality, which is not always a given in this price range. K&F has once again managed to deliver a product that is not only functional but also aesthetically pleasing. The packaging is, as always with K&F, very good. The filter arrives safely packaged so that no damage occurs during transport. Everything is very neatly and professionally packaged, which I really appreciate. A special highlight is the magnetic attachment of the polarizing filter to the lens. This is ideal for quickly taking a picture without a filter without having to fiddle around for a long time. Simply remove and reattach - brilliant! The quality of the filter is incredibly good. When mounted and you turn it anti-clockwise, you can see the change straight away. In this case, the filter minimizes reflections, which makes a huge difference, especially on water or glass surfaces. The colors become more vibrant and the images clearer. I love this company and its products. K&F has never disappointed me. Today it's even on offer on Prime Day for just 20 euros - I just had to grab it! Conclusion: The polarizing filter from K&F is an absolute must-have for every photographer. It offers excellent quality, is easy to use and the magnetic attachment is a real plus point. Clearly recommended to buy!