While my particular polarizer did seem to have a blemish that caused it to not work with my camera lens, K&F were very quick to offer support and refund my purchase. I value this empathy for the customer very highly and was completely impressed by K&F in that regard.

I’ve had a generally good experience with K&F filters and this is no exception. The polarizer works well for my automotive shoots and doesn’t add some crazy cast over my images. It doesn’t feel cheap and performs as it should.

I've been a fan of K&F Concept for a long time and have a lot of filters. Especially in the beginning, the cheap products were a real boon for my wallet. I simply couldn't afford expensive polarizing filters, ND filters, or adapters. However, they impressively demonstrate that K&F Concept can also be absolutely high-quality with this filter series.

I can report that just unpacking the filters is a real pleasure. Although this doesn't count directly into the review, it immediately gives off a completely different feeling than with the brand's other product series. It continues with a very attractive and haptically convincing case, which allows the filter to be removed via a tab.

But now on to the filter itself. I already have several polarizing filters in use, but none of these filters really convinced me as much as the Nano-X PRO. The workmanship is simply excellent, the weight is comfortable in the hand and the thread is fun - when screwing on and even unscrewing again. Most people will be familiar with it, cheap filters like to stay in place. The optical performance, which is ultimately important, is great. Reflections are skilfully filtered and there is also no distortion of the actual image. The look that is created is simply great. When you do some magic in post-processing, photos of cars simply look amazing, a completely different level. I can therefore make my recommendation without hesitation.

This is a really nice polarizer and it works fantastic, as you would expect at this price point. It really just looks and feels high quality. Just be very careful when installing that you don't crossthread it, because I apparently did and now the filter is stuck on my lens :-( I will be leaving it on all the time because the camera shop I took it into said they are likely to break the filter trying to remove it. I don't think that is a fault of the filter though, just me not paying enough attention when I was putting it on.

I recently purchased the K&F Concept 67mm Circular Polarizers Filter Super Slim with 36 Multi-Layer Coatings and I'm so impressed. It's amazing how much of a difference this filter makes to my photos - in terms of clarity, sharpness and colour vibrancy. It's super slim, yet incredibly strong and durable. I love the 36 multi-layer coatings which give me amazing results every time. The images are crystal clear, thanks to the high definition coating. The colors come out vibrant and the polarizing effects are stunning.

As soon as you unpack it, you notice that this filter is of very high quality, as it comes in high-quality hard cardboard packaging. A very stylish and practical case is also included. The filter itself also looks super high-quality, scratch-resistant and works wonderfully!
It is very easy to screw onto the lens and also rotate it, although this is a bit difficult. But that doesn't mean it slipping either!
The price is quite high, but anyone who is willing to pay that much will have an absolute top product!

I've used ND filters from K&F in the past, so I wasn't surprised by the quality compared to newbies. The filters allow sharp focus without restrictions. Thanks to the really extremely thin glass and the thin frame, there is no cloudiness or dark spots at the edges.

The frame has small brackets so that if you want to readjust it, you don't have fingers in the picture.

The whole thing is rounded off by a nice leather storage pouch. Overall, absolutely great!

I am a Professional Home and Personal Chef and I also teach cooking both in videos, directly online and in live streams. I am also an online influencer, Vlogger and commentator. As such, my needs are extensive and many when it comes to cameras, microphones, mixers, input devices to computers, studio, lighting & editing equipment, as well as various control apps. I am picky and critical in reviewing and care little about brand names or product claims. If they are good, I will praise and recommend them, and if not, I will fully explain my reasoning for saying so. Honesty is my reviewing policy!

I have become a big fan of K&F and their filters. Even their lower-end filters perform brilliantly, but THIS one takes the cake! It's an absolutely superb filter that I would not hesitate to put against the most expensive high-end German filters than cost more the double the price!

The 36 multi-layer NANO-X coating is very evident in the quality of polarized images it produces. The threads on the filter are micro-fine and screw into a lens without any issues whatsoever. The circular adjustment is smooth as silk and effortless.

For me, this is a very versatile CPL lens at 67mm that many of my Sony, Sigma, and virtually all of my Tamron lenses use! I have tested mounting and removal on every compatible lens with a single issue.

This is the highest quality level of K&F Filters (NANO-X PRO). It comes with a 2-year warranty, and a manual is available online. They add a Microfiber cleaning cloth in a sealed pouch in the box as a nice bonus. Thoughtful!

The filter comes secured in a VERY nice faux leather overlap storage pouch. Clearly well thought-out.
Don't be put off by its Chinese Manufacture! It is super high-end and exceptionally well designed and produced. The company has won a number of INTERNATIONAL awards for design and their patented products are available in 56 countries.

This is truly an amazing filter for the price offered on K&F Concept. It is clearly the BEST CPL filter I have ever used over the years...including those from well-known and very expensive German manufacturers.
The filter and the inclusions rate an unequivocal STRONG FIVE STAR rating from me, along with my honest and VERY hearty recommendation! You cannot go wrong with this filter if you need a CPL!
Simply SUPERB!
Happy Shooting!

I used this for an Iceland trip and was able to capture some phenomenal images when it was on my glass (primarily a Tamron 28-75mm f/2.8 with a Sony a7ii).

The ring itself is a little stiff, but that's great for a polarizer - means you have one less thing to worry about when framing your shot in that this won't turn a few degrees on you. In terms of negative impacts to image quality, I can't notice many but I'm not exactly a pixel peeper.

For my uses, this fit the bill!

Appearance as soon as I opened the package, I slowly realized that the price was not only influenced by the polarizer itself. The presentation and packaging are reminiscent of a design product. The polarizing filter comes in a stylish slipcase with a magnetically lockable case. In theory, you could also use the included foldable stand to set up the packaging like a picture frame. Not an option for me personally, but you have to admit that the developers of the packaging went through the design concept from start to finish. It could hardly be more elegant. Personally, I would still prefer a robust hard case, but that's a matter of taste. Regarding the filter: I mainly use my polarizing filters in product photography and occasionally in real estate photography, mainly to combat reflections or to partially eliminate them. Anything I do right when I'm shooting takes less time later in post-processing. As you can see on the test images, you can keep surface reflections in check with a polarizing filter. In the meantime, reflections can also be reduced better with software, but you get easier and better results with a polarizing filter. A polarizing filter is still a must-have in some areas of application. The Nano X-Pro achieved very good results in my test and can keep up well with my existing polarizing filter. I haven't been able to test how well it reduces flares and ghosting, as I'm currently photographing very little landscape and outdoor scenes. For future outdoor use, it comes with the luggage. What I don't like is that the filter ring is a bit too cumbersome to turn. This bothers me, especially when it comes to freehand photography, which I do a lot. On the other hand, a ring that moves too easily is not good either. When the camera is on the tripod, the somewhat difficult turning doesn't bother me at all. As you can see, it's a matter of taste and basically not a negative point. Overall, a very high-quality polarizing filter that is very well made and works very well. On very tough photo trips, I would either pack it in a different case, otherwise I would be too worried about the expensive piece.