am a passionate landscape photographer as a hobby and have now switched from the screw filters to this rectangular filter system from K&F. The screw filters were all fine, but you don't have the option of attaching a graduated filter to the ND filter in order to achieve even nicer effects. It is mounted on the lens using so-called adapter rings, which are included in the most common sizes for lenses. After attaching the adapter ring to the lens, the filter holder is attached. This is secured by a small lever (spring-loaded) and later released again with this. Now you can slide the filter plates into the filter holder. This lifts a bit severely but it should also hold and must not wobble. It is also important to observe that the filter used is close to the lens so that no more light can penetrate between the filter and the lens, which could possibly ruin the recordings. In terms of quality, the system makes a good impression considering the price. The only thing I noticed negatively is that the filter holder has some play after it is placed on the adapter ring and why there is no adapter ring for a 55mm filter diameter in the set, I also ask. 55mm is a common diameter for lenses. I can highly recommend the K&F system for amateur photographers. The professionals will probably use filter holder systems from other manufacturers, but they also cost a lot more.

I've been using the product for about half a year (almost daily) and I'm very happy with it! Pro: The installation is easy and holds very well and with the installation rings it can also be used universally for every lens! The filter also keeps its promises and the quality is still excellent! Contra: the glass is a bit difficult to slide in, if you want to push the filter in, you should remove the attachment to avoid damaging the thread! Conclusion: I am very satisfied with the product, even if you have to be a bit careful! I give this product 8/10

Buy several of K&F's filters, and while the brand disappoints when it comes to tripods, it more than makes up for it when it comes to filters. This kit is excellent, at the level of optical quality, and materials.
They have almost no color cast or chromatic aberrations, as well as no loss of image sharpness.
Highly recommended, especially since the ND1000 can go head to head with a Lee Big Stoper, and deliver better results for a fraction of the price.

The only drawback that it has, like all KITs, is that it does not come with a case to store everything (the K&F case is sold separately and is quite small for my needs).

Welp, after getting this and not having a need for it until, of course, 2 days after the return window had closed, I broke it within 15 minutes of starting to use it. The seller graciously replaced it for me and followed up with multiple emails to check in with me. Still getting to know the product but initial impression is good and the seller provided excellent service.

This kit helped me get some great shots!

To be honest I was really hesitant to purchase this, however the price intrigued me enough to give it a try. I have to say this ND Filter is right up there with the best. It comes nicely presented and the case to store it in is great. There have NOT been any weird coloration in. The glass is high quality and easy to clean. Honestly I love this ND Filter.

The filter holder is compatible with multiple lens sizes, thanks to the included adapter rings. It's versatile and adaptable to different setups.

The square shape of these filters allows for creative positioning and stacking, giving me endless possibilities for unique effects.

The graduated neutral density filters in this set are fantastic for capturing stunning sunsets and balancing exposure between the sky and foreground.

The kit includes a handy filter cleaning cloth that helps me keep the filters free from dust and smudges. A thoughtful addition!