Alongside its new upcoming ND and CPL flagship filters, the UV filter is another great addition to the new Nano-X PRO Series from K&F. This is a fantastic addition to any camera setup as it reduces haziness and blue-ish cast. Some UV filters get backlash for actually causing other strange artifacts in images such as distortion or discoloration, but this filter does not negatively affect the image quality at all.

Overall, I really recommend you get something like this for your camera. No, it won't reduce the image quality, and it'll actually be a lifesaver as it enhances the image quality and it also offers a level of protection for your lens! Replacing a UV filter is much easier than replacing the glass of your lens if damaged, so keep that in mind.

K&F’s build quality has been second to none in the last several years. They’ve created a series of extremely high-quality filters using very slim precision machined brass rings ( brass is a much better material to use for this purpose than aluminum. It’s much less likely to strip threads or to cross thread) and excellent optical glass.

This filter is no exception. It has absolutely no optical distortion whatsoever. It filters UV and pretty much nothing else I think it has about a 99.9% visible light transmission.

Most people use UV filters to protect their lenses but it’s also helpful to filter out UV light for photographic reasons. It can help to increase the life of your camera sensor and prevent distortion in the images.

The anti-reflection coding on this is extraordinary. This competes well with my expensive high end German filters that cost up to four times as much money.

This filter is slim enough that it should not interfere with the image or create any vignetting even with wide-angle lenses.

This is my review for the UV filter but honestly every K&F filter I have purchased has been extraordinary.

Look at the photo and see if you can tell any difference.

Made in China, this attractively-boxed slim filter fits perfectly, causes no aberrations in the visual image or color throughput, and does not cause any problems with the fit of either the lens cap or a camera cover. While you're likely to simply leave this on the chosen lens, it comes with a magnetically sealed suede carrying case, a microfiber cleaning cloth, and a two year warranty. It's not inexpensive but it provides equivalent quality to Canon L series lenses or the matching caliber lenses from other brands. Very pleased, and a perfect gift for the family photographer.

Simple and clean is the way. I've learned that some cheaper alternatives add distortion or even discoloration to your photos and I don't want something that keeps me in the touch ups longer than I need to be. K&F has really done something simple and beautiful here. No distortion. No discoloration. And I can let this live on my lens to keep it safe and offer an extra line of defense in the unfortunate event that something happens. Quality of the build is nothing short of what you'd expect from K&F. Everything fits into place, screws on nicely, and the glass feels like it's secured into the metal housing. Definitely recommend even with the other massive amounts of competition out there.
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This filter came elaborately packaged suitable for gift giving. It also looks great with a gold colored inlay showing its pedigree. Please see the image that’s part of this review for a look at part of the gold colored lettering.

It sure does look the part. I tried some test shots with the filter on and off the lens and then did the best pixel peeking I could noting no difference in exposure or color cast. To be fair, I’ve never noticed this with any high quality filter. I’ve never bothered with bargain basement filters because I have no interest in Lomography or its related ilk.

The manufacturer says this is thin and it is. Please see the image where I compare this filter with another UV that costs less than half as much. Both seem thin to me. I don’t see how thickness makes that much of a difference because adding any filter will require the removal of this one or you’ll get image quality robbing refractions from between the two filters.

I considered using a micrometer to measure the thickness of the lens itself but gave up the idea because I had no way to assure that I’d not scratch either this or another filter I’d use for comparison.

In sum, this does work well as a UV filter and it does not in any way alter the images when compared to the same lens without this filter attached.