Purchased this product to protect my camera lens, plus to help remove unwanted UV effects. The glass filter is mounted in a thin black coated aluminum frame and does not take up much space on the camera and that feature is very good to me. The price for the UV Filter was reasonable and I will most likely purchase additional filters from this company.

Fits well good materials and lens auto focuses perfectly

There are some very bad cheap filters out there, but not these excellent K&F filters at exceptional prices. The multi-coating seems to be as good as many more expensive filters and the glass quality is very good, German optical glass. There is often debate as to whether protective filters should be used with lenses, but I think they are good insurance against accidental damage or splashes and are easily removed if not wanted during recording... like an optically clear lens cap . I can happily recommend these K&F filters, I have several...

Manufactured by a well known brand in the photographic industry, this filter is extremely easy to fit provided you buy the correct size (all lenses require a different size filter). Above all, this special filter variant helps to avoid scratches or annoying little fingers smearing the lens front element. K&F Concept is certainly among the top brands and should definitely be a worthy contender in all the books in my opinion.

Economical UV filter. I am fond of recording videos of motorcycles and when I record on dirty roads I am forced to use this type of filter to prevent any stone that jumps from breaking my lens. As all UV generates flares, I leave you with a couple of photos in which I have forced the appearance of the flare so that you can see it clearly. Perhaps for photos it can be a problem but in videos it is cool if you know how to play with it. It slightly yellows the whites, which gives the image a slightly warmer appearance in general. I have hardly noticed a difference in terms of sharpness between the filter on and off. For its price it's great. Before I had one from the Hama brand and I would say that this one is better.

For my Panasonic Lumix G lenses, I needed two "protective filters" so that rain and fingerprints can't damage the front lenses. There are different opinions on the net about the effect of UV filters, so I don't want to say anything more about it, but there is a blue-tinted coating on the K&F Concept Pro UV filter, the delivery condition is perfect and the packaging is (especially in view of the the price) can almost be described as luxurious. A first check does not reveal any adverse effects on the image quality, and the slim design means there are no shadows on the 12mm lens. Lens caps continue to fit securely, and the lens hood also fits the lens either way. I see the handy "teeth" on the outer edge of the frame as a big advantage - finally someone has thought along! Especially with the "slim" filters, it is sometimes rather tedious to get them off again after they have been screwed "safely". There are even tools that make this removal possible in the first place. But that's a thing of the past here, with this practical ribbing on the edge it's no longer a problem. At that price you can also have one or two of these filters with you in your camera bag and when the mud has splashed you can quickly put a clean one on - just perfect!

High quality filter No distortion in my photos, which was not the case with the cheap filters tried before. I can just recommend her. Mikaël

Fits Sigma 150-600mm perfectly
Both lenses are Sigma lenses with 2 different brands of UV filters on them. The lens on the left is my 150-500mm with a filter made by another brand. The right is my 150-600mm lens with the K&F filter. The lens on the left looks a little hazy, while the K&F filter does not.

Does not decrease image quality that I can tell. You can feel that it is weather sealed, but I'm not testing it to see if it truly is.

Comes in a plastic case

So far, no complaints.

First impression - fits, well packaged and the lens cap from Sigma also holds on. Would I buy again. Image quality has not yet been tested, if necessary I will write something later.

I now have this amazing filter attached to my Olympus 60mm macro lens. The lens has no lens hood, a bad front cap and obviously no filter. This is now on board, along with a tidy front cap and third-party lens hood. 46mm is a little small and fiddly, but this one has a really good knurled ring that feels good in the hand. The thread is also very smooth and positive. The color balance is imperceptibly different, so it doesn't bother when shooting in well-lit close-ups. I love the improvement on this brilliant lens. ricky