Got this to combo with my Canon R5 and the nice all-around RF 24-105 4 L lens. Fits nicely, and the lens cap is secured. Its UV protection is a nice feature to have. It keeps my pictures free and clear from those pesky UV rays when taking pictures outdoors, especially at the beach. My kitty ended up being the celebrity for the day while we were getting some sunshine hehe. Definitely worth getting, especially for anyone doing outdoor photography with the 70-200 2.8 L lens or 24-105 4 L lens (77 mm diameter).

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.

I like UV filters that don’t get in the way and protect my expensive lenses. I would say this one qualifies. It is very slim and light and I don’t notice any abberations from the glass. No softness or mist or darkening. Just a crystal clear pass through. Perfect. I’ve had the best brands in the world over the years and this is on par with all of them, as it should be for the price. Easy to recommend.

I've heard varying opinions on the benefits of keeping a UV filter on the end of a camera lens. Many people say it's smart because if you drop the camera, replacing a filter is much cheaper than repairing an expensive lens. I've heard others (particularly professionals) say it doesn't make sense to buy an expensive lens and then put a cheap piece of glass in front of it that will just degrade the image. Those folks say keeping the hood on the lens will provide plenty of protection and if you have an expensive lens, it should be insured against damage anyway. I've invested in some good Canon L-series lenses so I'm torn on the best approach. I've been leaning towards going without the UV filter, but I still want one if I'm somewhere like the beach and sand or dirt is blowing. So if I'm going to put another piece of glass on the lens, I want to make sure it's high quality and this filter meets that requirement. You can tell when a vendor has put a lot of thought and care into a product and it shows throughout the process. This filter comes in very nice packaging and they provide a high quality case that has a magnetic latch and a nifty ribbon on the side that you pull to extract the filter from the case. This keeps you from having to reach in and possibly get fingerprints on the filter. Great design! As to the quality of the filter itself, I don't see any aberrations in the image when I use it. This line of filters from K&F aren't cheap so they won't be for everyone, but if you are taking your photography seriously, you should consider this product.

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.

This is the flagship series from K&F, so if you want the absolute best filter they produce, this is it. It has a brass ring, which is slightly harder than aluminum. That makes it more resilient to binding on the threads, and makes the filter itself feel much nicer in the hand. It has inner and outer threading, so I can stack filters, or clip my lens cap directly to it. That's great for me as I don't have to ever take this filter off. The main point of this filter for me is protection, and it's so much nicer having a high end piece of glass to put on my high end lens rather than most UV filters that are a piece of plastic. I tried to make it produce flares, and I couldn't get any. This is the closest thing to a perfect UV filter that I've ever used. I also really like the design of the case. It has a pull string on the side that'll push the filter out so I don't have to worry about getting fingerprints on it. Overall a very high end filter. Highly recommended.

With modern cameras, the use of a UV filter is actually no longer necessary. I therefore use the UV filter more to protect the front lens against scratches and dirt. I did not observe the often-reported reduced image performance (when using filters), so protecting the expensive lens is more important to me. I did not notice any color differences thanks to the multi-coating. However, I also did not notice any improvement in contrast or sharpness, but this is more due to the good coating of my lens and the use on a modern DSLM. This will probably be different on an "old" analog camera. Unfortunately, I was unable to test this because I do not have a lens with a suitable filter diameter. Thanks to its slim brass mount, the filter can also be used on wider wide-angle lenses. I use the filter with a 24-70mm lens on full-frame. Due to its design, the minimum focal length should be around 17mm on full-frame. The mount is cleanly manufactured and fits well into the thread on the lens. The filter comes well packaged in a sturdy leather case. Once the filter and case are removed, the outer packaging can also be used as a picture frame. Included is a stand and a cleaning cloth for the filter. Everything feels very high-quality and expensive.

I've heard varying opinions on the benefits of keeping a UV filter on the end of a camera lens. Many people say it's smart because if you drop the camera, replacing a filter is much cheaper than repairing an expensive lens. I've heard others (particularly professionals) say it doesn't make sense to buy an expensive lens and then put a cheap piece of glass in front of it that will just degrade the image. Those folks say keeping the hood on the lens will provide plenty of protection and if you have an expensive lens, it should be insured against damage anyway.

I've invested in some good Canon L-series lenses so I'm torn on the best approach. I've been leaning towards going without the UV filter, but I still want one if I'm somewhere like the beach and sand or dirt is blowing. So if I'm going to put another piece of glass on the lens, I want to make sure it's high quality and this filter meets that requirement. You can tell when a vendor has put a lot of thought and care into a product and it shows throughout the process. This filter comes in very nice packaging and they provide a high quality case that has a magnetic latch and a nifty ribbon on the side that you pull to extract the filter from the case. This keeps you from having to reach in and possibly get fingerprints on the filter. Great design!

As to the quality of the filter itself, I don't see any aberrations in the image when I use it. This line of filters from K&F aren't cheap so they won't be for everyone, but if you are taking your photography seriously, you should consider this product.

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.

This is the flagship series from K&F, so if you want the absolute best filter they produce, this is it.

It has a brass ring, which is slightly harder than aluminum. That makes it more resilient to binding on the threads, and makes the filter itself feel much nicer in the hand.

It has inner and outer threading, so I can stack filters, or clip my lens cap directly to it. That's great for me as I don't have to ever take this filter off. The main point of this filter for me is protection, and it's so much nicer having a high end piece of glass to put on my high end lens rather than most UV filters that are a piece of plastic.

I tried to make it produce flares, and I couldn't get any. This is the closest thing to a perfect UV filter that I've ever used.

I also really like the design of the case. It has a pull string on the side that'll push the filter out so I don't have to worry about getting fingerprints on it.

Overall a very high end filter.

Highly recommended.