Very happy with the filter quality and delivery was super fast.
Already fitted and barelly noticeble.
(Extra: the hood can be use at the same time , many other brands once the filter is on you cant take or put the the hood)

If you're used to cheap $10 filters just to protect your lens the price is eye watering for sure.

But this is a quality filter from top to bottom. I normally ignore packaging aesthetics but thats the first thing that stood out. I thought there was a watch inside. From box to the filter pouch - Quality. They even threw in a cleaning cloth. Normally youre on your own with that.

As for thr filter itself, doing a side by side with my cheap filters there a noticrable difference in detail. The filter itself is textured and grooved to reduce need for a filter wrench. The glass even spins inside of the ring so you dont overtighten. The 67 thread covers a wide range of lenses I have but Ill be using this for landscapes. One small knock on this is that theres not much depth to the filter so my lens cap doesnt securely settle in and ultimatley can bump off.

Still one of the best filters out there.

I have tested this “K&F Concept Nano-X PRO series polarizing filter” extensively with my two 67mm Sony lenses (85mm + 24mm focal length) and would like to share my experiences today: The packaging of the filter is impressive, because “K&F” has this “Pro” Filter very attractive and well packaged.

You will receive a bag with leather parts, which is softly lined on the inside and is used to store the filter. In addition, an extra packed cleaning cloth is included. The bag has a magnetic closure and is very well made all around. The filter itself is also very well made, it has a brass frame and can be easily screwed onto my two lenses. Turning the filter to adjust also works well. Due to its slim design, the filter also does not apply too much to the lens.

The surface of the polarizing filter has been coated on both sides with a 36-fold nano coating, making it waterproof, dirt-proof and scratch-resistant. The coating makes the filter robust and I assume that this makes it durable and allows me to shoot with it for a long time. I am also completely satisfied with the properties of the filter, it reduces reflections (e.g. in water) by eliminating polarization by around 99% and the contrast of the image (easy to see when taking photos of sky/clouds) is also increased.

I've already been shooting in the landscape with the filter, I'm very satisfied with the image quality. I did not notice any visual disturbances caused by the use of the filter. I can recommend the “K&F Concept Nano-X PRO series polarizer”.

Tested for video on my VG30 and works like a charm. It comes with a nice carrying case. Remember: You need to install on the front of your lens and then turn clockwise or counterclockwise so you can align properly and get the elimination of reflection that you are looking for.

This CPL filter performed really well when used on my most recent vehicle rig. I was most concerned with the reflections that the windshield would produce at any given moment throughout the shoot. Thanks to this filter, I was able to drastically reduce the glare and focus on my subject who sat inside the car.

The filter itself is quite practical to use. Although it is a bit tough to remove when using step-up/step-down rings if you tighten it too much, it's generally a good rule of thumb to not overtighten any filters. In this instance, I just wanted to make sure everything was incredibly secured as the rig would be in motion, but otherwise for normal scenarios I wouldn't have had that issue at all.

Overall, I do think it's well worth the cost. I've used cheaper alternatives that haven't really offered the same result as this CPL filter by K&F Concept. Personally, I believe that sometimes using cheap gear ultimately cheapens the results and overall quality of some videos. In this instance, K&F Concept did an exceptional job given the price. Yes it's definitely premium, but it's well worth the cost.

I started photography back in the film days, when digital post processing was not an option. Consequently, filters were a must. I have always had circular polarizers available for all of my landscape and outdoor work
glass. The K & F Concepts CP is relatively expensive, but why buy high end lenses and skimp on the filters?
The packaging and presentation is befitting the high quality glass enclosed. This filter is simply the best quality polarizer I have used to date. I highly recommend this item, it is worth the price, and you will not be disappointed.

Filter is nice

I had the opportunity to test the polarizing filter from K&F.

Facts:
• Thread size: 67mm
• multi-coating
• waterproof
• incl. bag

The filter is delivered in attractive product packaging. The customer is immediately interested here and wants to get started. The bag that comes with it protects the filter optimally.
It is very robust and scratch-resistant.
It is also very easy to adjust and allows precise adjustment and fixation. The effect that you achieve with this polarizing filter cannot be achieved in post-processing. The filter shows its quality, especially when it comes to reflecting water surfaces.

Overall, I am very satisfied with the result of this filter. It ensures a significant increase in the quality of your images. Clear purchase recommendation from my side.

I've become a big fan of K&F Concept filters. I have quite a few of their ND/VND filters and a Nano-X series CPL filter that is simply excellent. This is my first Nano-X Pro series filter and while the others are high quality this one is on another level entirely.

The filter has a coated CNC machined brass that attaches to my lens smoothly and comes off without binding. It's slim to minimize any possibility of vignetting yet retains front threads to attach other filters. The edges are knurled and move with a slow liquid feel that helps the filter stay adjusted where you want it. The filter has K&F's Nano-X 36 layer MRC coating that resists glare, fingerprints, etc. and makes the filter easier to clean.

It comes in a slim leather case with magnetic clasp and drawstring that lifts the filter up when you pull it - this is a great feature that helps keep fingerprints off the glass.

As with my other K&F filters this one is extremely neutral without any color cast that I can detect. It has replaced my older B+W CPL filter in my bag and takes the place of my Freewell magnetic ND system when I want to travel light. It's K&F highest-end filter and compared to the competition it's cheaper and better quality making it a fantastic all-around value. Highly recommended.

This filter and its packaging exudes quality. But of course, it all comes down to the filter itself, regardless of how nice the packaging and presentation, and this filter didn't disappoint.

I tried it out on my Nikkor 24-85 on a Nikion D800 for a few basic comparison test shots (see my pictures). The polarizer is easy to turn and feels fluid. Dialing in the right spot is pretty easy. I noticed no degrading in the image quality, attesting to its glass and coating quality.

It comes in a really nice case with a wrist strap. The box can even be converted into a picture frame... pretty clever. It also comes with a vacuum packed lens cloth, which I haven't opened yet, so I can't say how nice it is. Overall, it seems like a very high quality filter for their new flagship Nano-X PRO Series.