This has helped with UV protection during the day and has also helped prevent scratches to my camera lens. It is very slim and you can barely tell that its on. I am also able to put my lens cover on it so that it does not get damaged. Worth the investment

K&F makes solid filters, and this UV filter is no different. My 24-70 has been naked for some time and I decided it was time to get it a protective UV filter as I've brought it back into my rotation of travel lenses, so I ordered a matching 77 mm filter. The K&F filter surprised me when I first unboxed it. First, the case is fantastic. It's a hard-shell smoky-transparent plastic case that is secured with 4 tabs and a short rotation to lock and unlock it. It's a large filter case because the same case accommodates 82 mm filters, but it will also accommodate smaller filters down to 43 mm. And the filters won't slide around. But how? Inside the case are two conical sections of silicone, a small one with 2 ridges and a large one with 10. The large one has numbers next to each ridge indicating the size it fits (43, 46, 49, 52, 55, 58, 62, 67, 72, 77, 82). The small one with 2 ridges is meant to hold the opposite end of the filter and stabilizes it. So as long as your filter is one of those listed sizes, it should fit in this case and is held securely in place due to the silicone ridges. Now, it's held my single-layer filters without issues, but it doesn't accommodate my variable ND filters or filters with rotating handles/extensions that jut out.

The filter itself is very well constructed. The aluminum body has two sections of thick knurling built in so it's easy to grip the filter for installing and uninstalling. The filter itself doesn't noticeably impact my image quality on my 24-70 compared to without the filter when I examine an image up to 2x in Lightroom, and I don't notice a significant color cast either. For me, the K&F UV filter is well-constructed and good to use.

Thoroughly enjoyed adding an extra layer of protection to my lens from the elements. The protector didn't effect my image quality or auto focus. It provided a high quality image.

I put one of these on every one of my lenses. This is the best quality filter I've ever purchased - I'm impressed with the clarity, the glass, the ease of screwing it in. Loses a star because the case it comes in is HORRIBLE to put back together, and in fact I ended up throwing it out and using a case from a competitor filter.

UV Filters are commonly used to prevent extended UV rays on the front element of a lens, and as a long time photographer, I recall the days when a UV filter was kind of a must-have, for protecting your lenses, long term... or at least that was the theory.

Unfortunately, much of that belief still continues to this day, and while the merits of a UV filter offering protection, are still very much a hotly debated subject, UV filters DO offer one very good benefit... they keep dirt/grime/fingerprints off the main front element of a camera lens.

In case of wedding photography, it's not that unheard of for a child/baby/drunk-adult to reach out and attempt to touch your lens... in fact, the attempts to do so, can produce some of the most incredible shots, if timed right.

However, the cost and difficulty to clean a good high end lens, is often a scale harder than simply cleaning a lens cover on the front... which is where UV filters tend to come in... they do a good job of keeping direct contact off of the actual lens.

I've used many different types of filters over my decades of photography, and among those, UV filters are probably the ones that have the most quality range with them.

This is the first K&F filter I've used, and I've been using it on a Sigma ART lens for the last week.

I'm happy say, this filter is a nice middle to upper range UV protector. Unlike so many of the cheaper UV filters, this one doesn't seem to introduce any readily noticeable color shift, or image distortion with the image.

While I'm sure, if I start pixel peeping, and comparing this UV filter to a >$200 one, I could probably find a few flaws here and there.. the fact is, this filter is half the cost of many of the other upper middle range filters.

... and lets face it. A UV filter's primary goal, is protection. It decent UV filter shouldn't be altering your images in any noticeable way. So to that end, this product does EXACTLY what it's supposed to do.

One thing the K&F DOES excel in, however, is the case the filter is packaged in.

The case is a hard cylindrical case, with an easy twist open. However, the nicer aspect of this filter, is the fact that the case has a silicone ring, with grooves in it, that holds the filter in place, while inside the case. This is something that many other manufactures DON'T do (including a large number of rather high end filter manufacturers)

While yes, this is the first real experience with a K&F Filter, for me... after looking at the attention to detail they've done, I'm now in the market for a few others of theirs :)

This UV filter came in a nice round case. The filter was very clean out of the box. I got this filter to protect the lens front element when shooting outdoors. Lens cap fits easily over the filter.

When shooting indoors, I do not use a filter. I use it outdoors depending on the location and/or environment and only on lenses that do not come with a hood. It is a piece of extra glass that we put over the lens and I am sure it has some minor imperfections. You may notice some differences if you happen to be a pixel peeper.

This filter is good, I did not notice any degradation in image quality on pictures shot outdoors. Even though I do not use it indoors, I just wanted to test to see how it performs. On all the portraits I shot with this filter, I did notice some loss of contrast.

It is a good filter to protect the lens against dust, scratches and fingerprints. If it gets scratched, I can easily replace it with another one.

With all my lenses, I use the K&F UV filter to protect against external influences, so the glass can be cleaned outdoors without hesitation (without high-quality cleaners/worries about scratches). If it does get scratched, I'd rather buy a new UV filter than a €2,000 lens. As already mentioned, I use the K&F UV filters for all my lenses because I am really very satisfied with the quality. Pros: -Price performance -No loose glass -No rattling -No extremely thin glass which is prone to breakage -Lens hood fits -Slim -no change in image quality (RAW) -Lens cap fits -Box included when not in use l I use the K&F UV lens for my lenses Filter as protection against external influences, so the glass in the outdoor area can be cleaned quickly without hesitation (without high-quality cleaners/worries about scratches). If it does get scratched, I'd rather buy a new UV filter than a €2,000 lens. As already mentioned, I use the K&F UV filters for all my lenses because I am really very satisfied with the quality.

very good, high quality product! Flawless glass without annoying reflections. Accurate thread. When it rains, the water rolls off nicely. The filter is therefore also suitable for outdoor use. Even with my 10mm wide-angle lens, no vignetting is noticeable. The filter was delivered dust-free in a nice protective cover. With Silm you simply have a smaller surface to attack, here you can simply help yourself by taking rubber/Tetra Band and increasing the friction to turn it up. If that doesn't work either, I put my lens out in the cold (if it's not cold/then in the fridge) material contracts and repeat the process, has always worked until now.

Filter in a very good processing. High-quality packaging - product great value for money. Unfortunately, the filter arrived 10 days later than announced - error in the mail (Christmas!) Purchase recommendation from my side

Bought to protect my 28-60mm Sony lens from dirt and scratches. It fulfills its function by protecting colors, not distorting or altering them. In my case I bought it for a 40.5mm diameter which is not found on all brands. I have more K&F Concept products and they are all excellent quality and good price. Absolutely recommended