don't like putting anything in front of the lens, but I like even less the possibility of damaging a lens that has cost me so much that, as I don't make a living from photography, I couldn't afford to buy it again. I tried a few "no-name" UV filters, but the quality of the filters is in line with the price and either the image lost some sharpness or the colours suffered, and sometimes both. I'm trying this K&F Concept MC UV with a Canon EF 24-105 f/4L lens and although so far I've only taken a few quick and poorly done test photos, I haven't noticed any of the aforementioned things like loss of sharpness or colours. I've posted some photos taken without changing any parameters, with and without a filter, and I hardly notice any difference between them. Between that and the fact that the cap can be put on with the filter screwed onto the lens, for now it's going to stay there.

just picked this filter up as insurance for the front element of my 70-200 f/2.8 VR lens. I have purchased a few of these in different sizes now, and as long as you are careful not to overtighten them (they are SUPER THIN and not easy to grip tightly) they seem to work as well as the much thicker and more expensive B&W multicoated filters. K&F typically has good quality and these filters are no exception. If you get vignetting with this filter, you'll get it with ANY filter. I've never seen anything thinner. I also like that you get a decent little storage box, and the lens cap is every bit as good as the OEM ones I have. Not sure what you'd need the little lanyard for (at least as far as filters are concerned), but the included microfiber cloth is also appreciated. In the balance between protection and utility, this filter definitely skews toward utility. It will protect my front element from dirt, dust and smudges, but maybe not large mechanical knocks. On the flipside, it's lightweight and is never going to make your image corners dark. If you are truly rough on your gear, you might need a thicker filter to save your lens front element. But if you prize good optical quality and minimal weight, then this filter should be near the top of your list.

got this for my Canon RF 15-35 and it works great! No noticeable difference when shooting and it has the added benefit of being threaded so you can attach a polarizer or ND filter on top of this.

I'm getting increasingly impressed by K&F filters. I have an assortment of them and find them to be well-made and do not degrade the image. This is another I've added to my kit. There are different schools of thought on the use of filters and I am on the "must use" camp. These kinds of filters protect your expensive glass. Over the span of decades of holding a camera, a UV/Skylight filter has saved the front element of my lens from impact. The filter takes the hit and shatters but the lens stays intact. Very happy with this new filter.

Overall a pretty great lens filter. I didn't notice much image degradation at all, and the lens cap seems to stay on well. I bought this to replace the old lens cap on an older Nikon lens that didn't have the pinch-style latches inside the diameter of the lens (only on the outside) so this is a big improvement, and the protection afforded by the UV filter is great too.

This is a K&F Concept 24-layer coating, 0.4% ultra-low reflectivity and anti-glaring UV filter, better specs than their budget ones. Actually, I cannot see the difference with their lower-priced similar ones for my grandkid's photos. Of course, the difference is there, so I use it for my most expensive f1.2/1.4 prime lenses. Perhaps, for some people, a thousand-dollar lens should have a more expensive UV filter.

see no image degradation whatsoever. The lens cap is a little harder to handle than other lens caps, but nothing to fret over. The lanyard and cleaning cloths are some nice extras as well.

Obtained for my daughter who is a photographer. This is her favorite brand of filters so she loved getting one as a just because gift. She says they are the best filters on the market and will not use any other brand.

These are nice quality filters. I don't notice a difference between these and the name-brand, traditional filters. I use them on my Canon lenses. They also come with a lens cap and strap and lens cleaner, so a nice package. I would recommend them as a lower cost alternative to the name brands. This particular filter functions as a UV haze and lens protector. I would never have my lenses out in the wild without a filter on the front and this does that.

recently received two K&F lenses. I've never used the brand before, although I have heard of them. I decided to try it on and my my, its a great filter. No issues. Having used their CPL filter I went for another as I needed protection for another lens of mine and grabbed this one. I think the price (very low) has held me back from the brand under the *false* assumption that their filters were less than. Turns out I wrong. They just have great filters at a great price!