There are different types of CPL filters on the market with different quality, workmanship and obviously price. For those who do not want to spend a lot, the products of this brand can be right for you thanks to the excellent quality-price ratio. Even in this new type of filter with the new technology came particles the quality is really excellent both in construction and in functionality, we will have a magnetic filter that will be applied on a ring that is previously screwed to our lens so that we can then apply all the magnetic filters that we have in our possession. This filter has a particular characteristic compared to the previous ones, the nanoparticle technology is a coating that guarantees excellent waterproofness, that is, the small water droplets will slide much more easily on the glass without leaving traces that can stain or create halos on the lens. The filter itself works very well like all filters of this kind by turning the filter clockwise or counterclockwise we will apply more or less this kind of filter that will cut or in any case reduce reflections and lights especially on reflective surfaces such as glass and water or even on hair it will remove the reflection of light creating a more homogeneous and less bright hair. A good product to always keep with you for the various occasions where reflections can damage our photographic creations.

bought the polarizing filter from K&F and I'm absolutely thrilled. This isn't my first filter from K&F, and I have to say, the company's quality never ceases to impress me. The filter's workmanship is first-class. It feels robust and high-quality, which isn't always a given in this price range. K&F has once again succeeded in delivering a product that's not only functional but also aesthetically pleasing. The packaging is, as always with K&F, very good. The filter arrives safely packaged to ensure no damage occurs during transport. Everything is very neatly and professionally packaged, which I really appreciate. A particular 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 with it for a long time. Simply remove and reattach it – brilliant! The quality of the filter is incredibly good. Once mounted, if you turn it counterclockwise, you can immediately see the change. 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 sale for just €20 on Prime Day—I just had to jump at the chance! Bottom line: The K&F polarizing filter is an absolute must-have for every photographer. It offers excellent quality, is easy to use, and the magnetic attachment is a real plus. I definitely recommend it!

Barely 29€ at the time of this test for a magnetic CPL filter in 82mm that works as expected (tested on a full-frame Canon in 24Mpx) it's very good. The filter itself plus the magnetic base ring are not thicker together than my other non-magnetic CPL filters. The build quality is there, the screwing is smooth, the visual rendering consistent and quality. There is just the thread that is not deep enough for me to put my native 82mm lens cap back on it. But I have a K&F 82mm cap that fits it, it depends too much on the caps themselves and I use my filters 3 times out of 4 with step up rings on other sizes anyway so it doesn't seem crucial to me.