I'm impressed by the quality.

I bought the Graduated Filter because it was recommended to me by friends.

After a few weeks in use, I can say that I am more than happy with it.
When photographing, it is necessary to darken the sky (e.g. at sunrise or sunset) so as not to get a burnt sky or too dark foreground.
Here the filter shows its strengths. The filter can be positioned very easily in the appropriate holder without the risk of slipping. This allows you to get beautiful photos even at long exposures.

For expansion I will add more filters of this brand later.

I can make a clear purchase recommendation!

Fast delivery. Good and nice packaging
There are many different connector adapters for all common lens sizes. The bays were a little too tight on delivery, but I unscrewed the screws a little and then it was ok. I didn't notice any color cings in the filters which I like

Absolutely delighted! K&F did a lot of things right here! When I unpacked the adapter rings and the holder, I was already very satisfied. Metal case from 48 to 82 rings. But then the glass, it is packed in a leather case, very high quality! This is otherwise only known from very large brands and companies, which can also be paid well for expensive money, but the price is right here! Only the German translation in the instructions leaves something to be desired! Doesn't flow into my rating! I can overlook that! Dear K&F team, please keep it up! An absolutely overwhelmed customer that you won with me!

I currently have a 12 stop ND filter that I find can be a little heavy handed at times and wanted a 6 stop ND.
After seeing the promotion ads I thought I’d give this K&F Concept filter a try. The sale price was too good to pass up, my order arrived a few days faster than excepted which is always great. The filter was well packaged, love the pouch with pull tab which makes getting the filter out much easier, the filter quality looks to be great, equally or better then my current filters, hopefully I can test this 6 stop ND within the next few days!

K&F filters are value for money. Deliver the quality a photographer expects.

Of course, in preparation for our round trip, we also needed a good filter system. We spent months reading, getting information, watching and comparing videos. In the end we decided on this system. And that was a great decision! There are definitely better systems out there, but also for a lot more money. Everyone has to decide for themselves whether a hobby photographer really needs it. With this system, we are talking about real glass - not plastic! The glass is not colored but coated, so there are no distortions or blurring at the edges. The only drawback is that the glasses are quite difficult to slide into the holder - BUT nothing slips out and nothing slips. Perfect for quick position changes. We got used to it quickly. The results with the filter are as desired, there is nothing to complain about. We are thrilled and would choose this filter system again and again. We bought the kit with the holder including all adapter rings, the graduated filters, the 64 and the 1000 - everything was great! Have fun capturing memories!

the quality of these filters seems to be on par with others (more expensive ones). The course is clean and evenly straight. The very well thought-out pockets, with their pull-out tab, offer fingerprint-free handling. Clear purchase recommendation on my part...!!!

A mild light reducer. Can be easily plugged in together with other medium-strength ND filters. Quality like other manufacturers offer. Good optical glass.

bought the filter bag to have all the filters at hand more quickly and not to have to search for them, and to save space. The bag is of high quality and fits perfectly for 100x100mm filters. A total of three (theoretically four) different filters can be stowed in it. So it is perfect for a standard ND filter set (8,64,1000). The inside of the bag is completely lined with microfiber so that the filters can be transported in it without additional protection. As a smart feature, it has a pull-out mechanism. This means that if you open the bag and pull the tab, all the filters are offset and highlighted so that you can grab them much better and read the name directly. I bought another glass filter at the same time - ND64. Since I already own an ND8 from another brand and the ND1000 from K&F, this was of course still missing in the series. Overall, I am super satisfied with the quality of K&F. The filters (update 2020) have almost no color cast anymore. In certain light situations, my ND64 filter turns green. However, this can be corrected without major problems during image processing. The shape of the filter (no round filter) also means that there are no problems with vignetting or falling sharpness. The images are therefore almost unaffected in terms of image quality. The processing is top (no sharp edges, stains, etc.) and the price speaks for itself. All in all, I'm very happy with the entire filter system from K&F and will probably get hold of the gradient filters soon!