K&F concept have always had quality products and these filters don’t disappoint. The price is really good for 3 lens filters. With this set you also get a microfiber lens cloth, an ultra violet filter, a polarizing filter, a neutral density filter and a really nice storage case to keep from getting scratches on the lenses when not in use. The case alone is worth the price. You can’t go wrong with this.

The K&F Concept 82mm filter kit has given me a premium, high-quality feel, perfect for anyone who does some photography and video without spending a fortune. I got the 82mm version for my main lenses and use a reducer for my 77mm lenses. At around 50 euros for the three-filter pack (UV, CPL, and variable ND), it's a reasonable price that makes you hesitant to try it, especially considering you get a case that can hold even more filters.

The variable ND filter does its job, controlling light without any issues. It's ideal for shooting video at 50fps, preventing sharpness. If your camera has a high base ISO, you might find it insufficient in a logarithmic profile, but for normal use, it's decent. The polarizer cuts reflections quite well and doesn't vignetting. The UV filter is an inexpensive but far superior product to other competitors at this price point—it doesn't lose sharpness or introduce strange flares. They might have a bit more glare than the more expensive models, but they're much better than the lower-end Kenko and Hoya models that cost similarly or even more. They unscrew easily, come with a very good case, and are very durable.
Everything works as it should.
The drawbacks are minimal: they're not perfect, but for the price, you have few complaints. So, if you buy a decent UV, you get a more than decent ND, CPL, and UV, all with a quality case.
As I said: incredible versatility and decent quality. 100% recommended if you're looking for a solid kit without breaking the bank—you can't find many faults with such a bargain. I'm giving it 6 stars for being so affordable.

A stylish case that provides good protection and can hold at least 5 filters. Filters are included, but haven't been used yet.

I like K&F concept filters. I use a circular polarizer or a VND on almost every type of shoot personal and professional. Most most of my lenses are 67mm and I have no issue with vignetting, or color casting. The filters a fantastic quality. The filters work great. The case is great lots of storage room for extra filters and step up rings. The quality is nice hard shell and good zipper. Overall the kits a wonderful value.

These filters are top notch for the price. I lost my last ND filter and needed something quick for next day delivery for the last few days of my trip. The nd filter selection was sturdy but yet easy to change and didn’t have much vinetting at all like others in the same price range. Didn’t realize the case came with it and it’s sturdy and actually stores 2 other filters and still functions and protects like it was designed for. The other filters are clear and offer great color accuracy!

These are great filters for the money, the included case is extremely useful as well.

I haven't noticed any loss of clarity or excess flaring using any of these filters and on any wide to standard lens you shouldn't see any vignetting either.

Using manual white balance I haven't seen any strange color shifts.

I had typed a long review that was somehow deleted on its own, so here's a shorter version.

These filters are wonderful. They feel like they're well built and the glass is of decent quality. The UV filter is clear as day, to the point where I didn't know there was a piece of glass there and accidentally smudged my fingers on it trying to feel it.
The CPL filter works great, I was able to take some nice pictures redirecting where the light reflection lays.
The ND Filter is amazing. It's adjustable from ND2 to ND400, so in theory could also be kept on the lens the entire time but the exposure wouldn't be the same. The adjusting part is smooth and feels sturdy, I wish it had a locking mechanism that didn't allow you to spin the glass 360, but that's not the biggest deal.
I also appreciate the carrying pouch that allows you to fit everything that came in the box, from the filters, to the nice added microfiber cloth for cleaning

If K&F does read this though, please make it so you can only adjust the ND filter from Minx to Max and that's it. Don't let us go a full circle to end up in the same range area anyways.

As always, K&F has delivered on an exceptional kit of lens filters. These are well machined with quality glass. I particularly enjoy the Variable ND 2-400 filter which operates smoothly throughout the entire range. Fits perfectly on my Sony G OSS lens which almost always lives on my camera. The hard-shell case is a nice addition. All 3 filters are excellent- and in a kit that comes in at under $45 at the time of order- this is a terrific deal and brings tremendous value for the every day photographer like you and me.

This is a great filter kit overall. All three filters work well, and the ND filter is especially useful since it’s adjustable and easy to use. The case they come in is fantastic on it's own especially if you're starting out or don't have a good filter storage option yet. It has individual slots that keep everything separated and protected, and it’s become a permanent part of my main camera kit. I do wish the case had a few more pockets, but considering the compact size, that's probably not a realistic design. For what it's worth, I use these exclusively on a telephoto lens and they work really well. My Lumix G Vario 45-150mm lens is the only one I own that uses 52mm filters so these are almost exclusively for that lens. I've had great results on my Lumix G85, but each camera and even each lens has it's own color science so your results may vary. For example, the optics in my 45-150mm lens leans toward a cool cast. Something to keep in mind while you're testing. Overall, the filters are solid quality and the kit is well thought out. Definitely worth it if you want a reliable starting set for everyday shooting.

I needed a complete kit because until now I only had an old UV filter whose brand I didn't even know, and I wanted to start taking more polished photos by better controlling light and reflections. This K&F Concept pack has exactly what I was looking for: a UV protection filter, a circular polarizer (CPL), and a variable ND filter that ranges from 2 to 400.

The UV filter serves a dual purpose: on the one hand, it physically protects the front element of the lens from potential bumps or scratches, and on the other, it blocks ultraviolet radiation that can cause blue casts or loss of contrast. I leave it on all the time as basic protection. The polarizer is proving incredibly useful for improving my outdoor photos; it eliminates those annoying glares that appear on water or wet surfaces and makes the colors appear richer and more saturated. You just have to rotate it until you find the right angle, and the change is immediate.

The variable ND filter is incredibly practical because with just one filter, you get nine adjustable stops of light reduction. I've mainly used it for recording video with shallow depth of field on very bright days without overexposing, and also for photographing waterfalls with a silky effect during the day. It works perfectly in the intermediate settings, although at the higher settings, a slight color cast or cross-hatching can appear in the corners if using very wide-angle lenses.

The construction is solid, the rings are machined aluminum, and the glass has water- and grease-repellent coatings. They come in a practical case with compartments for each filter. For the price, I consider it a very worthwhile purchase for anyone who wants to improve their photography without breaking the bank.