As with all the brand's products, a very high quality product, your images will not take on a specific color like many other filters. Great, I am very happy and satisfied. I really like all K&F Concept filters. I am totally satisfied with this 3 stop gradient filter, I have used the filter several times currently and from the first shot it was love at first sight

This has been added to the K&F filters I already use and is exactly what I expected as it is excellent photography gear. Meanwhile, K&F has outperformed even the most popular and well-known brands in terms of quality with its filters, and it shows! Undeniable optical quality, lack of chromatic dominance, etc. And quality pays off, in fact they even cost more than other brands, but for those who want the best and use professional equipment, this product is excellent, I recommend it!

Excellent, I think they are the best filters on the market, they do not dominate, they are well made in optical glass, very durable, the quality is at the highest level. Fast and accurate delivery. The filter is excellent and will not make you regret other famous brands. The packaging is highly professional. I thank you.

As always, K&F Concept makes excellent filters. Bought to complete my pro set. The box was well packed and everything in it was new. Like every K&F filter it also comes with a flexible leather case which as always stay home as putting a glass filter in a flexible case goes against my common sense. For this reason and for the price, which is getting expensive, I put 5 stars. The filter itself is excellent.

No complaints - every photographer will point out the usefulness of a rectangular filter. But: I often take the camera with me on hikes. There the focus is on the hike, not the equipment. I don't have the time to use a rectangular filter and take the perfect filter photo. But the filter does what it's supposed to do: It fades out the overexposed sky so that the remaining colors of the picture don't drown in darkness. Without filter screwing - a real enrichment of the picture quality without wrong compromises and material battle. Clear recommendation!

It has a good quality and is super processed. The leather case is very chic and protects the glass.

Had screw-on filters for years. Of course they work, but a plug-in filter is really practical, especially for landscape photography.
I first bought the filter plug-in system from K&F (Nano x per row).
Now have some filters.
Filter and plug-in system highly recommended. I'm really excited. Goes fast, good quality and you can also leave filters on if you want to go a few steps further.
I also like the frame around the filter. So fat fingers don't get on the filter so quickly. Nothing wobbles.
There is also a stylish filter bag.

I bought the rectangular filter set directly from K&F.
Since I have worked with screw filters in the past and got the problem with vignetting when screwing several filters on top of each other, I have wanted to buy a rectangular filter set for a long time.
Since the sets from NISI, Haida and other well-known manufacturers are very, very expensive, as a hobby photographer I was looking for a cheaper alternative.
When I saw several reviews on YouTube, I decided on the K&F set, which is half the price of Haida and CO.
I have absolutely no regrets about my decision.

The filter holder is very valuable and well thought out.
I particularly like how the polarizing filter is attached to the holder and how it can be adjusted using the small wheel.
The filters themselves are made of optical glass and show no color cast and are also well coated.
Another positive aspect is that the filters have a plastic frame with a tab.
This allows the filters to be inserted and removed without annoying fingerprints.
A bag is included to store and transport the holder and the filters in it.
Also included are various adapter rings for different filter thread diameters.
As a landscape hobby photographer, I no longer want to do without the advantages over screw-on filters.

I give a clear purchase recommendation for amateur photographers and professionals too!
I wasn't expecting such excellent quality for this price.
Crazy what K&F delivers here.

The first test, screwing the adapter onto the lens, attaching the filter holder and fixing it, took a moment, but once you understand the principle, it's quick and easy. Putting the holder on the adapter is easier than with the systems I've known so far, the fact that you can fix the adapter is a plus on top. The CPL easily slips into the holder. The rotation of the filter afterwards also runs well and without it hanging or snagging anywhere. The rectangular filter sits firmly in the holder, but thanks to its frame it can be easily installed and removed. There is no comparison to the plastic holders that I have had so far, here I have a valuable filter set on my valuable lenses. But yes, the plastic holders that I used to have were cheaper, but you can tell by looking at them.

I was looking for a rectangular filter holder for a long time and after a long search I found what I was looking for from this supplier. The holder comes with 7 adapter rings and can therefore be attached to different lens diameters. The adapter ring is screwed onto the lens thread and the holder is simply mounted on the ring .The bracket holds securely and doesn't give me any concerns that it might not hold even with minimal play.