These are so easy to use and the quality is fantastic - both the build quality and the picture quality. I can't see any colour cast whatsoever from both the CPL & ND filter. I think you would really need to pixel peep to see any sharpness difference, and even then I'm not sure there is.
Being able to attach the filters to both the UV filter and filter ring is really clever - I keep the UV on my 24-70 F4 and the filter thread ring on 16-35 F4 so it makes it even faster to clip on the filters no matter what lens I use.
Since the ND isn't variable, there's no dark X. And no vignetting at 16mm, unlike when I use my square filter set.

 ►This is something that I never expected to see since I use DSLR and lenses.Honestly now, it makes a massive difference.I am not talking about the filters because you can find these any time, I am saying here about the system itself which I find to be absolutely brilliant!How easy is now? Very very easy and I explain why.I use filters for filming outside which sometimes can be challenging because of the light, the sun comes up from the clouds, manual settings, everyting over exposed which is very bad for video.►My lens diameter is 67mm so I got those. You have to screw the ring and then based on what you want to get you just have to attach the filters.........you DONT have to screw them one by one which saves you a lot of time.Now, the advantage?You avoid moving your camera is you want to change the filter!!! This is the most important feature I would say!!I keep my camera in one spot and 100% doesnt have to move AT ALL!! So with this magnetic system i just remove one filter and add another, easy as that. I dont have to screw anything!!!►What you get? A nice pouch, a filter ring(the magnetic one), 1 uv filter, 1 cpl and one ND1000. You already know what they do because you are all photographers so its easy.Build quality? Good, clean design, slim filters, nice pouch(has a ring so you can attach it to the bag, tripod and so on.►VERY IMPORTANT!!You cannot attach all 3 filters at the same time!!ONLY one by one so dont try to attach more because they might fall and you damage them.How strong is the magnet?Once attached to the lens even if you run with the camera in your hand you will not lose the filter so dont worry.►Easy to remove? I would recommend to use both hands to make sure you remove the filters properly.The most interesting filter for my type of work is the ND1000, makes a massive difference. I dont have to explain things like filming at f2.8 when it is bright outside + shutter at 60 for 30fps because you already know what I am talking about.Make sure you choose the right filter size, check and double check your lens size.►Overall experience?Impressive techology!!If this helped you in any way, please click on the helpful button below. Thank you

honestly I think it's great I've taken some amazing photographs and am no professional but I would say some are photography worthy in some way think its down to how it's been used I no mine isn't great great with long distance but that's just cause I haven't ordered the bigger lence other then that normally works great the only thing that bugs me is sometime it won't full focus so sometimes the flash takes ages and blinds people in process but mainly if in dark room or so forth this one took near mine

yer if you go for a walk take it out I tend to look around see the beauty visualizer it then snap and I take alot and I go through see what I see

I shoot in various elements and destinations where lighting is different and filters are needed for optimal results. I have been using the traditional screw on filters but I find it time consuming especially how it needs to be aligned perfectly on your lens, taking up to a few minutes for each one when I could miss the opportunity of my shot. I find this K&F filter set to be a great choice for me. I am no professional by any means and take photos for fun with my Nikon d850 and these filters have worked great for me. The magnetic adapter ring is easy to screw on the lens and the lenses stick to it well. These lenses work great in the rain and are not only waterproof but the water beads off of them. I have not had any issue of fogging between the lens and filter.

The come packaged nice in a hard case, each in its own slot. I find this to be a great value for all of the different lenses offered in this set and I am extremely happy with them.

I purchased this K&F Concept 67mm Magnetic Lens Filter Kit for my Tamron 28-75 f2.8. These filters work great and fit on my new camera.quality looks good.It was a great choice!.... It allows me to capture long exposure water shots on bright, sunny days. It's not a variable and it's too dark for those dark dreary, overcast days. You'll want a different filter for that. The filter is well made and easy to thread onto my lenses. It also comes with a nice case to store and carry. The images come out clear and sharp with no vignetting, like you might get with some filters. Great value, definitely worth the money. I tried to add more than one photo for examples, but couldn't. I'll try to edit and add more later. I am happy with this purchase.

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.

UPDATE 10/26/21: After over a month, I've already lost a CPL filter. Make sure the filter is flush in either the UV adapter or adapter ring. I was busily setting up my camera on a cliffside when I accidentally bumped my tripod and the CPL filter fell off.

Very convenient magnetic filters and lens cover. These appear to be of excellent quality and I use them exclusively on my lenses.

K&F Concept’s Magnetic Lens Filter Kit, which includes a UV filter, a circular polarizer, and a neutral density filter, along with an adapter ring, is a good concept that isn’t quite executed correctly.

The idea behind a magnetic lens filter kit is a good one, as it’s never fun to fumble around changing filters when you are trying to get a photo, especially if you are hiking and not in a position to lay down the camera on a clean surface and carefully remove and replace filters.

I tested this kit with the Nikkor Z 24mm-200mm lens, which takes 67mm filters, and removed the existing UV filter I had on the camera. The adapter screws on fine, but now with the K&F Concept adapter on the lens, the lens cap falls off easily. The situation improved slightly with the addition of the K&F circular polarizer on the adapter, but the cap still did not stay in place.

I even tried keeping my original UV filter on the lens, along with the adapter and then the circular polarizer, and the situation did improve a bit, but I don’t like having a double layer of glass in front of the lens element. I also tried the adapter with an F mount lens with a 67mm diameter, and the result was a little better as F mount lenses have different lens caps.

The filters themselves work well and seem to be of good quality. Included with this review is a photo taken with the circular polarizer. The filters themselves are very thin, which is perhaps why the lens cap does not stay on, and the movement of the circular polarizer is smooth. The filters come with a nice carrying case as well.

Bottom line, I like the concept of magnetic filters, but, at least with the Z mount 24mm-200mm lens, the adapter and filters are too shallow for the lens cap.

Impressed with the photo quality using this filter