Great set similar to my free well that I got from a few years ago. These are not variable so there is no cast in the photos when you take them. They are just solid darkness and they are magnetic so you can swap or stack them on top of each. The magnet cover doesn't go over a hood but they work nicely with the cpl on my 70-200 lens. Great to use it during the bright days with a hood on which is the only set I found that allows me to use it with a 70-200 with a hood on. You have to find a thin thread that fits in the 77mm size of the 70-200 and be able to attach the hood on.

The K&F Concept neutral density (ND) and circular polarizer (CPL) magnetic filter kit contains two ND filters, one for 8 stops, the other for 64 stops; a CPL filter; a threaded magnetic filter-holder ring, and a magnetic lens cover. The kit includes a padded bag to protect and hold the filters.

I ordered the kit with 82mm filters. The magnetic attachment is great for easily interchanging the filters. No need to unscrew a filter and then realign threads to reattach a different filter. You simply firmly tug on a filter to remove it, and then magnetically attach a different filter. Very simple and the filters are firmly held in place – no concerns about them accidentally detaching. The lens cover can be placed over any of the filters, so no need to remove a filter before putting the lens cover on. In addition, I was able to place the “pinch-style” cover that came with my lens on over the filters also, providing another option. Like the magnetic lens cover, the magnetic filters can stack on top of each other, but the filters are not threaded, so a threaded filter cannot be placed over the magnetic filters. The magnetic base allows the circular polarizer to rotate easily, while still providing a secure attachment to the lens. The filters worked well – the polarizer worked great to eliminate reflections, etc. and both ND filters allowed opening the aperture several more stops, reducing depth of field. (See included photo examples.) I have K&F Concep filters on two other lenses and have been very happy with those products. Likewise, I am very happy with how these magnetic filters worked on my camera.

I normally have a K&F 82mm threaded UV filter on my lens for protection. My only wish is the filter kit also included a UV filter or skylight filter that I could leave in place on the lens. As it sits now, I need to unscrew the UV filter and screw on the magnetic ring whenever I switch to an ND or CPL filter. I am shortly orderly a K&F Concept magnetic mount UV filter to avoid this cumbersome switch.

I am very happy with this K&F Concept (77mm) magnetic filter kit. The carry bag is very nice and the 3 filters are all high quality (CPL, ND8, ND64) along with the magnetic basic ring and lens cap. The magnetic attachment method is so convenient to switch out filters so now I am spoiled. I think I want to get the ND16 and ND32 and maybe the VND as well. The filters are stackable so could get almost ND10 if you used the CPL and ND8 together or higher with other combos. The filters work great on both my Panasonic 10-25mm f/1.7 and 25-50mm f1.7 77mm lenses. The magnets are strong but just like your normal lens cap the filters can be knocked off if you happen to bump the end of your lens. So don't do that... lol. These filters are a good purchase.

All sample photos were taken with the CPL filter on a 24-70mm lens.

First Photo - polarization. Brighter sky, less saturated blues.
Second Photo - with polorization, more saturated blues with higher contrast all around.
It's a subtle difference, and I'd argue with AI can be replicated with the right post editing software. But, I really don't want to be doing that with every photo I take.

3rd photo - it cuts through that water so effectively.

I'm very happy with the CPL. I use a ND1000 filter for most long exposures, so the other ND8 and ND64 are just bonuses to me. I can stack them super easily since they are magnetic.

I have zero regrets with this set.

What I like about this filter set:
1) The filters themselves are good. I don't see uneven brightness or color distribution on the images
2) I tested it on a Nikon lens with 67mm thread. The adapter ring fits it perfectly. But this is also where the problem comes. I already have a UV filter on the lens. With this ring on, it causes a minor dark corners. With the filters on, the dark corners become more pronounced. I could remove the UV filter, or what I really should do was to order a larger set and then use a step-down ring.
3) The magnet works really well
4) The package is nice and well-thought. It has a belt clip and D ring that allow you to either carry the package on your belt or hang it on the tripod or backpack.

Overall, this is a convinient package of filters that are easy to use. Just be aware of choosing a right size for your situations.

photography with strong light

I am not a photography expert but I am very happy with this quality polarizing filter kit. Very easy and quick to install on the lens. It works by a main ring that screws onto the lens, once this step is done you just have to position the magnetic filters on it. It is really practical, I think it is great. The cap is also very pretty. The storage bag provided with these filters is nice and can be easily attached to a belt. The filters are really good. I am very happy with them.

My main concern was the strength of the magnets, and I was pleasantly surprised to find that they are quite strong and it takes some force to remove the magnetic filters. I like that it case it comes with comes with five pockets even though it comes with four filters, which is a nice touch. I needed to return because I ordered the wrong size, but I'm definitely ordering them again.

Great kit for starting on photography

I bought this after seeing a co-worker with the kit and I couldn't be happier. Im actually surprised more manufacturer haven't adopted a magnetic system for their lens. Full transparency, you do have to take the magnetic ring off to fully clean the lens, or at least in my opinion - not at all a dealbreaker.