The product is presented very well, with its storage bag so you can take it with you wherever you go. The strength of these filters is that they are magnetic. With enough strength to keep them from falling off and the convenience of not flipping each one over to screw or loosen when putting on and taking off. Tip: Buy the larger ones and with adapter rings you can use them with all your lenses. In the end it's a savings. Regarding the quality of the filters, they are normal. They are not premium quality. I expected it for the price. It is therefore recommended to shoot with filters.

A really interesting set of filters for photographers who are passionate about landscapes and that will allow you to take photos that would otherwise be impossible, even when flying in post-production.
These are magnetic filters, except for the threaded adapter to be mounted on the lens, with no glass and no impact on the quality of the photos.

Delighted with the quality and immediate results.

Great product! Very practical with its design. Exactly meets my expectations. Using filters on a gopro 6, Impeccable result! (photo with the ND1000)

I used this product for photos of waterfalls, streams and the movements of a Ferris wheel in long exposure. I am satisfied with the quality for my amateur photography needs.

This is a nice ND set. It covers the base levels you'll likely need (vs an adjustable one) and is quick and easy to use. It has a couple of great things going for it (along with a few shortcomings).

If you are doing landscape photography, you'll likely want a mix of long exposure and shorter exposure images. It's time consuming to add an ND filter on, and to switch it out every time you want to change the power. And if you use a variable ND, you often get a color cast or vignette. The magnetic design is a handy solution. You put on the magnetic ring and then are able to quickly switch between filters. It's a great time saver.

If you shoot wide angle, thicker filters will likely add is some vignettes to your images. These are super thing profile ones and don't shot at 16mm (perhaps even wider???).

The challenge is using other filters or a lens cap. Once this is installed, you'll need to unscrew it to add in a polarizer, UV filter, or a lens cap. They do sell Nano-X filters for all of those - so you could buy into the system, as a solution. For me, I generally know I want to do ND work when using it, so it hasn't been an issue.

Great value for the price.

This filter set from K&F Concept was a great addition to my Sony A7iii and produces some great results. The ease of use of this filter set makes it a great option and it's basically always on my camera now. The ability to easily swap and stack filters makes this kit super fun to play and experiment with to see what results you can get with different combinations. The build quality is excellent and I would highly recommend picking up this filter set as it is a great kit and has been a good addition to my camera setup.

I tested and frankly I find no fault, no vignetting and the colors are well respected. The filter is easily screwed on, perfect thread, no problem attaching the lens cap on top.

Good quality and well packaged. Fits perfectly on my lens and stores easily with its screw-in system. In addition it can remain on the device because the lens cover fits on the filter. Happy with my purchase.

I have been slowly building up a collection of filters to fit the lenses that were included in my camera kits. I am very much an amateur/enthusiast and I'm still learning, so I learn a lot from researching photography websites as well as reading the reviews of more experienced photographers that have purchased the filters I am considering. I have a few single filters from K&F Concept and have been more than happy with the quality and ease of use. I only recently became aware of magnetic lens filters and was looking at some right around Christmas (as a present for myself). I ended up delaying my purchase because I had a hard time deciding which assortment of lenses would be best for me, and I also wasn't sure how well the magnets would hold the filters in place, I ended up delaying my purchase. I'm glad I did, because this set of ND lens filters will be perfect as I am just getting started in trying to get good pictures of the setting and rising sun as well as interesting cloud formations. I was especially interested in the gradient filter, but I will be using all of them. The quality of the glass and coatings is excellent and once I figured out the adapter ring, I found it very easy to install and use these filters. At first glance, I thought I didn't receive everything I was supposed to -- but as another reviewer mentioned, the ring is already attached to one of the filters. The ring is thin and light and goes onto my lens very easily. The magnets are surprisingly strong and I have no worries about the filters coming off. It is so quick and easy to change filters. I also like the wallet; it is sturdy with a zipper closure plus a magnetic closure. It unfolds accordion style and there is a padded pocket for each filter. It has a ring so it can be attached to my backpack, and there is also a loop on the back so it can be attached to a belt. The lens kit did seem a bit pricey at first, but now I think it is well worth the cost.