Typical of my experience with K&F products, these are excellent filters. They are every bit as good as a couple of other, higher priced, popular and similar products. No color casts, well manufactured, and simply work as described. Save your money and buy these over the more hyped brand names.

I am very pleased with this system and the quality of the filter lenses. It is wonderful for very quick changing of filters. Unfortunately I accidentally lost the ND filter the first time I went out and did not realise it until I was back home. My friend had zipped the bag they come in, and I, thinking it was still open and more concentrated on trying the one on the camera. unzipped it. So during my wanderings, the ND fell out. I did eventually manage to replace it, and received a magnetic lens protective cover as part of the order. I am made up now. I do recommend this system and it has the filters that I use, perfect.

This is a kit,the combinations to use CPL and ND1000 can be:
-Adapter+CPL, Adapter+ND1000 or Adapter + CPL + ND1000.
-UV Filter + CPL, UV Filter + ND1000, UV Filter + CPL + ND1000, UV Filter+CPL+ND1000

Comes in a padded case with a reverse zip to prevent any water from getting inside in case of rain. It can be clipped on the belt or anywhere else for comfortable use or transport.

As far as image quality is concerned I have few complaints, I haven't noticed any loss of sharpness or colour cast. I have been able to use both the UV+CPL+ND1000 up to 12mm on my APSC camera without vignetting.

I needed a more travel friendly set of filters to take with me on my hikes that would be too cumbersome to use my square ones. Having these filters in it's own soft pouch was perfect and it didn't take up much room in my camera cube. The magnets were strong as they held on while I was setting up my composition - sometimes in the rain and while on uneven ground.

I really like the convenience of this magnetic filter system. You only need to thread on the base ring and magnets do the rest. Makes it less likely to damage the threads of your lens if you don't have to keep putting on and removing a filter on every time you need to use it. I am using this with a 24-105mm full-frame lens and the base ring works with the lens cap and the hood although you probably need to remove the hood to snap on the filter because otherwise your fingers get in the way.
Each of the filters themselves are quite a bit heavier than the screw on K&F versions, probably because they need to make the filter ring out of a magnetic steel instead of aluminum. Whatever the reason, they feel a lot more premium than the regular K&F version.
In terms of performance, its a bit of a mixed bag. I don't have tremendous experience using CPL and ND filters (this is my first set) so I don't know what's considered good performance at a given price range.

Moving on, the CPL filter (photos looking out the window) has similar vignette to the ND filter at 24mm but appears to cut down quite a bit of reflections in my windows. Not much for me to point our here, it seems to do the job.
The set does come with a UV filter but I do not intend to use it unless I am in a rainy/dusty environment where my lens needs a bit more protection so I haven't tested it out yet.
For both the ND and the CPL filter, I did not detect any noticeable decrease in sharpness caused by using the filters.
I think the performance of these filters is acceptable. I am a little disappointed with the vignette but I have heard of much more expensive filters having similar issues so I don't want to be too hard on this set. All in all, for someone like me who does this for fun, I think its a great system to learn the basics until I can justify the move to something more premium.

Admittedly, the system of magnetic filters is not entirely new and I can't say who has copied from whom here, but K&F is already known to me through very good lens adapters and solid tripods. I was of course interested to hear that K&F now also offer such a system.
Whether the magnetic K&F round filters could convince me or the low price demands too many sacrifices, you can read in my review...
So far I have used screw-in filters from Rodenstock, B+W, Heliopan and Haida. These are all brands where a filter tends to cost what K&F wants for a complete set including a bag. I was therefore very sceptical about what to expect, also because K&F advertises Schott glass (hardened and therefore very robust) and 16-fold nano sealing. That reads amazingly well, but in practice it doesn't necessarily mean anything, because in the end it always comes down to optical performance, no matter how great the handling advantages are.
The set contains in each case...

- a very delicate adapter ring to screw in
- a UV or protective filter (to protect the front lens)
- a CPL polarising filter (removes reflections and enhances contrasts)
- an ND 1000 filter (darkening for longer exposure times. Water becomes silky, clouds blur)
- a storage bag
the filters, their workmanship and feel, is great. There are no visible defects, the threads of the adapter ring and UV filter run silky smooth, the holding force of the magnets is just right and even the fine knurling of the edge is perfectly finished. If it didn't say K&F on it, I wouldn't be able to distinguish the filters from any of the branded filters in my portfolio, purely from the outside
I don't know how K&F managed to do this at this price.
The most time-consuming part is opening the bag, the rest, well, "snap" and the filter is changed. The magnet has so much power that even if I attach the lens cap, there is no danger of anything coming loose at any time or in any position!
The whole thing is so ingenious that I ask myself why someone didn't think of it much earlier. Gone is the fiddling with unscrewing and how often I used to be annoyed that the filter is difficult to put back down again

Just when you thought... who would reinvent the wheel? K&F did it so well! I have the bevy of traditional filters and have always been screwing them on and off, carrying them with me, etc. All the usual ways we all use. That's what caught my eye when I saw "magnetic" and although... eh, seems weird. But I'm always ready for life when it comes to those little things, so I gave these a try. And now I find if I had to screw my filters on it would drive me crazy. This is a MUCH BETTER mousetrap for filter play! I swap out filters more often and use them more than I normally would. The magnets are strong and the filters are what you expect them to be. So far I love these. They just clip on, you screw on the magnetic ring and then the filters clip onto it. Your lens cap goes on top of the filter, so if you don't want the filter, I take it upon myself to take it with the lens cap and set it aside until I need it. If you use or swap out filters a lot, do yourself a favor and get these! I'm about to order a few more sets for my other lenses.

As a landscape photographer, I found this filter system very interesting. Unlike screw filters, these filters are applied and removed in a fraction of a second, while unlike panel filters, they are much less bulky, lighter and of course much quicker to install. PACKAGING AND ATTENTION TO DETAIL The filters are supplied in a comfortable and really well behaved four compartment pencil case. The case on the back has a tear-off buckle that allows us to attach it to our tripod or pants, and also a metal ring so that it can be attached to our backpack, to the tripod column or wherever we prefer. Finally, the zipper of the pencil case is rainproof or water leakage. The filters are contained and protected in special bags to avoid possible damage. CONSTRUCTION These magnetic filters from K&F Concept's Nano series are made of optical glass, which is perfectly resistant to water, oil and dust. The outer frame is made of lightly knurled aluminum to allow for an excellent grip. They are extremely thin and even if all three filters are mounted at the same time (UV, CPL and ND1000), the thickness is extremely small. UV FILTER In the photos I took with the UV filter, there is no color shift, no loss of sharpness and detail, and no dominance. POLARIZING FILTER This polarizing filter provides a pleasing overall contrast to the image, increasing the contrast between individual colors and saturating them without exaggeration. In addition, it offers a very light, warm dominant that it doesn't mind in person, but can easily be corrected in post-production. FILTER ND1000 The first thing that strikes you when using this ND filter is that it produces a slight - but present - hot dominant. Personally I think it's not a problem as it can be removed with one click in post production. After all, the overall sharpness as well as the details of the image are not changed. CPL+ND1000 FILTER I think the CPL+ND1000 coupled is very interesting. In fact, the effect of polarization reduces the hot dominant of the ND1000 filter and also provides a pleasant saturation and a soft overall contrast between the colors of the final image. In terms of sharpness and detail, there is no significant deterioration. On the other hand, there is a slight vignetting. PRACTICALITY The K&F Concept Nano Series Magnetic Filter Kit is extremely practical. The pencil case that contains the filters has a compact size that allows us to carry it in our backpack while sacrificing very little space. The weight is extremely light, which is very useful for those who go on long hikes, where the weight of the equipment can be felt after several hours. Installing and removing filters is nothing short of lightning. You can easily mount all three filters in seconds and remove them in as many seconds as possible. The hold of the magnets is really good and therefore there is no fear of finding yourself with filters that fall during the recording or transport phase. WHO TO RECOMMEND IN CONCLUSION, I would strongly recommend this filter set, excellent value for money: - those who are looking for a first filter set to experience creativity; - those looking for an excellent ratio between quality, size and weight; - those looking for maximum practicality in recording and composition. PS The filter comparison photos have not been edited and are therefore the original file, exported directly from RAW to JPG format.

love using filters, the polarizing filter in forests or on the coast I find it essential even when there is harsh light when low clouds are moving and in rivers, waterfalls and coast I love the ND filter. In situations where the polarizing filter or ND filter is not needed, I like to use ultraviolet to protect the lens. The truth is sometimes awkward to wear them, especially in adverse situations where, for example, it's cold and you're wearing gloves, there's a lot of wind, you're very close to a waterfall, and there's spray, etc. It has also happened to me once that I put the filter on the target for a while and then took it out so I found it interesting to try the K&F magnetic filters, I find it a comfortable system with a good one Price-performance ratio. The package includes a case with the 3 filters (a polarizer, a 10-step ND and UV) and a screw adapter, the case can be placed on the belt to always have the filters at hand. Using it is pretty simple, just attach the threaded adapter and place the filter on top as it's magnetic catches it instantly and from there it doesn't move. If I want to change the filter so easily it's as easy as removing and inserting you can watch the video where I record the simple process. The good thing about this system is that both the adapter and the filters are thin and you can also place two filters at the same time, e.g. B. the polarizer and ND to remove moving clouds with polarized light, eliminating unnecessary reflections. In summary, I liked that the system can change the filter so quickly when I'm traveling or in uncomfortable situations, I would appreciate it.

love using filters, the polarizing filter in forests or on the coast I find it essential even when there is harsh light when low clouds are moving and in rivers, waterfalls and coast I love the ND filter. In situations where the polarizing filter or ND filter is not needed, I like to use ultraviolet to protect the lens. The truth is sometimes awkward to wear them, especially in adverse situations where, for example, it's cold and you're wearing gloves, there's a lot of wind, you're very close to a waterfall, and there's spray, etc. It has also happened to me once that I put the filter on the target for a while and then took it out so I found it interesting to try the K&F magnetic filters, I find it a comfortable system with a good one Price-performance ratio. The package includes a case with the 3 filters (a polarizer, a 10-step ND and UV) and a screw adapter, the case can be placed on the belt to always have the filters at hand. Using it is pretty simple, just attach the threaded adapter and place the filter on top as it's magnetic catches it instantly and from there it doesn't move. If I want to change the filter so easily it's as easy as removing and inserting you can watch the video where I record the simple process. The good thing about this system is that both the adapter and the filters are thin and you can also place two filters at the same time, e.g. B. the polarizer and ND to remove moving clouds with polarized light, eliminating unnecessary reflections. In summary, I liked that the system can change the filter so quickly when I'm traveling or in uncomfortable situations, I would appreciate it.