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 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!

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.

The K&F Concept 77mm Circular Polarizers Filter Super Slim with 36 Multi-Layer Coatings, High Definition Circular Polarizing Filter (CPL) Camera Lens Filter (Nano-X PRO Series):

Is one of the finest quality filters I've used. Everything about this is premium. From the packaging to the filter wallet to the product itself is top notch. It has a brass powder-coated frame and high quality, crystal clear optics. A filter I don't feel too bad putting in front of my best glass. The threads are precisely machined and screw in and out very smoothly. The CP rotation feels impossibly, buttery smooth. Like its hydraulic but it's not, it's just a ridiculously smooth action. Like a high quality potentiometer. The knurling feels very nice, and over all the whole thing feels really great in the hand. As far as the polarization effect it works as it should and as expected, and with crystal clear optics. The included filter wallet is made from suede and heavy denim, with a pull ribbon to retrieve the filter with out stick your fingers down the pouch. The whole thing is rather lux. The packaging itself is a very classy, thick black box, with gold accents. the box also turns into a picture frame. The package also contains a microfiber cloth. Overall this is a very deluxe filter. It is a bit pricey, however the quality meets the price for sure. You get what you pay for sometimes and this is one of those times. You don't want to buy top quality lenses, costing thousands of dollars, and put a cheap filter on it. This is the type of filter you can feel good using on your best lenses. Precision machining and great quality glass.