very good quality (glass)

Really good filter, very inexpensive and delivers good results, the leather case supplied is very well made. I am very pleased. To make sure that I'm not a bot, you can also visit my Instagram account: @einechtesjohannes

In summary, to spend more if it performs the function perfectly, very good material for this price, I love it.

Having previously bought from K&F primarily at the photo shows, I was confident that I would be getting a quality product without the ridiculous prices of many photo gear companies. Having previously had a Lee filter holder that was damaged when I dropped my camera I found it a bit cumbersome so thought I'd try an alternative. Seduced by the price tag, I chose this product. The item arrived the next day as promised and I must say that at first I was pleasantly surprised by the packaging. Upon closer inspection I found the product to be well made, sturdy and very easy to use, much easier than the Lee filter version. The locking rings were also well made and fit for purpose...overall a very wise decision to stick with K&F.

Couldn't name a reason to switch to other manufacturers. Super quality and above all really cheap compared to other manufacturers

I've been toying with the idea of buying a gradient filter for a long time, although the prices from Nisi, Haida, etc., around 150 euros, have always put me off. Then I came across the filters from K&F, because the filters were reasonably priced, I ordered them. The extremely beautiful and high-quality packaging should also be emphasized. Here you get an imitation leather case that is lined with fine fabric on the inside and has 2 magnetic buttons incorporated. This case is again in a nice padded cardboard box, very valuable and stable so I wasn't really disappointed. Filter holder: First of all, it has to be said that you need a filter holder system for the filters, which costs around €25 at K&F. This is well made and serves its purpose. Here comes the filter holder in a padded cardboard box. The scope of delivery includes the filter holder and 8 adapters in the size 49mm - 82mm. So I'm already looking forward to going out into nature with the filter to test it. The adapter ring is screwed onto the lens thread and the holder is simply mounted on the ring with a snap mechanism. The mount holds securely and doesn't give me any concerns that it might not hold even with minimal play. The optical quality of the gradient filter is great! I didn't notice any loss in image quality and there's no distortion or vignetting. Furthermore, I could not detect any color impairments or other color distortions. The filter does what it is supposed to do, it easily darkens an overexposed sky and saves me a lot of work in post-processing. Conclusion Since I haven't worked with ND filters before, I don't know what I could complain about here. Overall, I am very satisfied with the glasses from K&F. You get a high-quality, processed filter with top optical quality and a good scope of delivery (artificial leather case). For the price of around €89, it doesn't need to hide behind the other brands. I will soon buy more glasses from K&F.

They correspond to what was published, very good packaging and presentation

Without being an expert on the quality of ND filters, I think they serve their purpose well, are well packaged and well protected (they are kept in a leather case) and come with a collection of rings to attach them to adapt to different lens sizes. Just remember that protection from the sun's vertical rays is imperfect and can have an impact. With a long exposure, when there is a lot of light, it is necessary to put your hand on the filter or put a flat surface on it.

Very good quality... As hoped... THANK YOU, K&F... !! —

Very good product