This is a basic UV filter. It seems to do a good job at protecting the camera sensor from UV rays and doesn't mess with the image quality

added this to my Canon Rebel T3i camera. The camera is a few years old and I love it. Cleaning the lens is always a chore, you have to get out the right cloth and make sure not to scratch it! But with this on, I can just use my shirt. If I scratch it, it was $20 and I can get a replacement. I'm really happy with that!

it fits right in and felt protective. Also I am able to rest in peace for the lence

While a clear filter may not be the most exciting bit of camera gear, it can prove valuable in protecting your expensive lens investment. This filter seems optically clear and does not add any color cast. From my readings I barely see any light loss, nor have I run into internal reflections. The filter has some grip indents on the outside which make it easy to install and remove. Many of my older filters would become stuck and difficult to remove, but I don't anticipate that with this one. It is not overly thin, but I have not discovered any vignetting with this at the wide end of my 24-70 Lumix S Pro lens. If you tend to shoot in harsh environments, or anywhere that may cause contact with your front lens element, seriously give this some consideration. It's affordable protection worth having.

UV filters are a lot more useful for film as UV affects film way more. However this is still useful for protection, both from UV if you are shooting a lot and also from dust and other particles. There is almost no visible difference between having it on vs having it off in most circumstances so if you want a little more protection on your lens, this is perfect for you.

Made from high-quality materials. Precisely built. It offered the least amount of resistance I've had screwing on a new filter. It's very thin so it won't interfere with wide-angle lenses (as much as is possible). Using a full-frame DSLR, I did side-by-side, pixel-level comparisons between shots with no filter and with this. One photo was a wide-angle shot the included sky on a high-UV day. Results: well, I didn't see any difference in color or richness in the high-UV shot, so I wouldn't buy it just for that. Mostly, people buy these simply as lens protectors (and trust me, they've saved my bacon on a high-end lenses several times now!). As a lens protector, you want it to be as unobtrusive as possible and I am pleased to report that I can detect no significant difference with any test shot - color balance, sharpness, contrast - they all are so close that I could never say definitively that any minuscule difference was due to the filter. A very high-quality product with (presumably) a good level of protection. The packaging and case also convey a feeling of quality and pride in their product.

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.

UV filter may help the look of some outdoor photos in bright sun, but honestly I can't see much difference. I use UV filters like most people do, as a way to protect the front element of my lenses. If you're shooting someplace where the lens could get stuff on it, like in the rain, at the beach (salt spray), or the pool (splashes), at a party where people might be getting sloppy with drinks or around kids/pets who might reach out and touch the lens, a UV filter is good protection. It's much easier to clean a filter than the element on an expensive lens! Of course for this purpose you want a filter that won't degrade the quality of your images, so far as I can tell this one does not. I haven't noticed any visible darkening or color shifts, in fact when I first opened the box for a second I thought there wasn't any glass in the filter ring! So overall I think this will offer some protection to your lenses without changing picture quality. And of course, if you're someplace that isn't hazardous to your lens you can easily take the filter off. While it's not a downside, I do kind of wish K&F would standardize their filter cases. I have received 3 different kinds already, and it would be nice if they had a stamp/sticker on the outside so you can quickly tell which type of filter is in the box! Luckily, I have a label maker.

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 makes the pictures somewhat more vibrant and clear. My daughter, who is the photographer, loves it.