Transparency note: The product was made available to me free of charge as an evaluation sample, free of any influence or expectations. My rating is based solely on my personal assessment and experience of using the product. Evaluation: For the quick readers I anticipate my evaluation, below I explain the details of my decision-making, my impressions of the product. I only take a minimal point deduction and award 5 stars, i.e. 5 stars rounded up. My only criticism is that the filter is slightly too stiff to turn, i.e. its operation when it is screwed onto the lens, but I hope that will settle down a bit over time. No, the rotation is not difficult, but a bit tough, I expect a somewhat smoother movement here. Processing quality: The slim frame is of very good quality, precisely processed and varnished. I appreciate slim filters, they don't build up as high on the lens and thus don't limit the angle of view, especially at the extreme wide angle. Slim filters can have the disadvantage of being more difficult to handle because the grip ring is very thin. Here it is helpful if it is handy and that is exactly what the K&F filter is. I can grasp the filter very well and see no problem even with wet fingers. The glass in the filter is very high quality, optical glass, very precisely processed and absolutely flat, and also multiply coated. First take the filter in your hand and see through it, preferably against strong contrasts and straight lines, for example a facade. Here you can see that you don't see any interference. I don't see any distortion, the image is absolutely flat on the entire surface of the filter, and I don't see any color distortions, I'm very satisfied. It doesn't look any different when I screw the filter onto my lens, but here there is another aspect, possible reflections, but this is exactly what a polarization filter is supposed to eliminate. In terms of the image effect, this is absolutely indisputable, be it on the water surface or on panes, reflections are suppressed very well, as expected. But there is another aspect and that is the reflections on and behind the filter towards the lens when backlighting from small point light sources is incident at an acute angle. I don't observe any reflections here, which speaks for a very good coating and glass quality of the filter. I was pleasantly surprised by the packaging of the filter and that starts with the attractive outer packaging in a high-quality slipcase. It contains a flap case with a magnetic clasp, it is very decorative and practical, and is of significantly higher quality and classier than the widely used plastic boxes. Conclusion: The K&F polarization filter is not a bargain at currently just under €150, but it is inexpensive in the truest sense of the word and is clearly placed in the premium segment. The processing quality itself is just as impeccable as the optical imaging performance on the lens. The case that comes with it is very attractive. Only the somewhat stiff adjustment of the alignment slightly disturbs the overall impression, so I subtract half a star for this. In the overall impression, this only plays a subordinate role and leads me to an almost unreserved purchase recommendation. Thank you for your attention in reading my review. If you want, please give me feedback on it, I'm happy about it.

wasn't actually a big fan of filters, but it always had to be a POL filter. As an ignorant photographer, you get it drummed into you again and again: get a polarizing filter, you need it, because you can never get the effects of it in post-processing. So I started with cheap polarizing filters and quickly stopped. I currently have a pole filter from Rodenstock, with which I am actually very satisfied, apart from the fact that it is sometimes a bit bitchy when screwing it on and off. So far I only knew K&F in the cheaper filter line and was therefore looking forward to a comparison with my Rodenstock. The polarizing filter makes a great impression right out of the box and gave me a "wow" effect. The frame is made of brass metal and feels extremely good and high quality. The screw thread is manufactured with absolute precision and the filter itself has a strong, high-quality coating. What I then noticed when using it: how easily it can be screwed onto the lens and unscrewed again. In fact, I've never had that with any other filter. No snagging, no jerking, nothing. It doesn't degrade my photos in any way. No ghosting, no flares, no color cast. Absolutely great. All in all, I am extremely surprised by the high quality of this filter and will therefore continue to keep an eye on K&F when it comes to other filters. I am extremely satisfied and can therefore recommend it without hesitation, despite the higher price.

The CPL filter from K&F comes in such an attractive packaging that you can immediately conclude that you have something really high-quality in your hand. In the box you will find a noble-looking case with a magnetic closure, which protects the filter very well. This CPL filter is "slim", which has the small disadvantage that you can't hold it a little harder when turning. Which brings us to the only small point of criticism on my part. Otherwise you get a very high-quality CPL filter here, which fulfills its purpose brilliantly, namely to reduce or prevent reflections, which makes the photos appear richer in contrast and more interesting in color as soon as they are taken. In post-processing, there are limits in this respect, and quite apart from that, I very often save myself post-processing because the photos simply come out of the camera in a more harmonious way and without looking artificial. The quality is impeccable, the filter itself is of very high quality. The image quality is perfect, no color fringes or distortions. For that 5 stars. A filter that I absolutely recommend!

use the polarizing filter on my Samyang 85mm lens. The filter has excellent workmanship and is supplied in high-quality packaging. It easily screws onto my lens. The alignment adjustment mechanism also has just the right amount of resistance. The polarizing filter makes a clear difference in the photos. In this way, reflective panes can be rendered ineffective if they are correctly aligned. Sure, the price is not cheap, but here you get a really high-quality product. That's why I give it the full 5 stars and a buy recommendation.

Got this to improve the image quality when I am out and about in the evenings taking pictures by the coast here in Newport Beach, CA. The filter was really easy to install onto my Canon EF 70-200 2.8 L lens, and it is very easy to maintain. The pictures came out stunning, especially from the water. I am in love with this lens filter, which is my new daily driver. Worth.

Got this to improve the image quality when I am out and about in the evenings taking pictures by the coast here in Newport Beach, CA. The filter was really easy to install onto my Canon EF 70-200 2.8 L lens, and it is very easy to maintain. The pictures came out stunning, especially from the water. I am in love with this lens filter, which is my new daily driver. Worth.

This is a really, really nice CPL filter. It has a very slim design so it doesn't result in any vignetting, even while using may long telephoto lens.

Threads onto my lens easily without issue.

Adjustment of the polarizer is smooth and predictable.

There's no color shift or any other artifacts from the filter. Just crisp images with accurate color.

The filter comes with a nice fabric storage case, along with a microfiber cleaning cloth.

There's also a little instruction card that details how to use the box the filter was packaged in as a photo frame. Kinda kitschy but whatever. I just tossed it.

Great quality though.

RECOMMENDED>

This is a really, really nice CPL filter. It has a very slim design so it doesn't result in any vignetting, even while using may long telephoto lens.

Threads onto my lens easily without issue.

Adjustment of the polarizer is smooth and predictable.

There's no color shift or any other artifacts from the filter. Just crisp images with accurate color.

The filter comes with a nice fabric storage case, along with a microfiber cleaning cloth.

There's also a little instruction card that details how to use the box the filter was packaged in as a photo frame. Kinda kitschy but whatever. I just tossed it.

Great quality though.

RECOMMENDED>

A Circular Polarizer is one of the best filters to own. It allows you to block out light coming in perpendicular to your lens. And with a circular polarizer, you can easily rotate it to reduce or remove reflections and glare - or reduce the brightness of the sky.

It also comes with an attractive pouch for storage.

This one is a nice design. It is small form, which I prefer. It rotates smoothly. And most importantly, it doesn't degrade the image.

I prefer this CPL to my Tiffen one.

A Circular Polarizer is one of the best filters to own. It allows you to block out light coming in perpendicular to your lens. And with a circular polarizer, you can easily rotate it to reduce or remove reflections and glare - or reduce the brightness of the sky.

It also comes with an attractive pouch for storage.

This one is a nice design. It is small form, which I prefer. It rotates smoothly. And most importantly, it doesn't degrade the image.

I prefer this CPL to my Tiffen one.