run this on everything. The super high quality allows me to run it and not even notice it's on. It's a fantastic lens guard.

Excelente lente y le quedó a mi lente sigma 150-600

This is a fantastic filter. I was hesitant to buy this for my Kowa TSN-88 spotting scope because I wasn't sure if it would fit, if it was good quality, or if I really needed it. I was testing my scope on a hot, cloudy day and couldn't quite make out the street sign two miles away on the hill. I put this filter on and things got a little clearer, the mirage a little less, and I could actually read the sign (Lane Ends Merge Left). Very happy with this and I didn't have to pay double or triple for the Howa, B&W, or Kowa filters. The only downside is that the scope's sunshade won't extend with this filter in place, but I imagine that would be the same with any other filter as well.

am new to photography so my experience is limited. The photography store I go to told me to be careful with lens covers as they have had a few people come in with issues with their camera not working and tracing the issue back to a bargain brand lens cover that was bought online. I showed them this one and they said it should be good to go. We have now bought two different sizes for different lenses in this brand. Acquiring the first one in December and the second in February. Both work well and help with stage lighting glare.

Extremely well-made. Very low profile with excellent machine work on the body and threads. And the glass and coatings are top notch. I’ve switched over from Hoya HD3 to these on all my new L lenses.

Love this camera lens and the case it came in! Very high resolution picture shots taken with this with unbelievable clarity! Very durable and made with good quality. Love adding this to my photo bag for must have shots!

Ok, so the filter itself is a UV filter and if it is doing its job, it protects your lens from damage, dirt, sand, etc without impacting image quality. K&F is a good brand and this filter does its job. The filter screwed on nicely without any of the squeaky sounds some filters make. I did not notice any impact on my images. The filter is thinner than some of my other filters, but it does have knurling in the edges to assist in twisting it on and off. But enough about the filter...The case is amazing. While some filters come in a hard plastic case filled with form-fitting foam, this filter comes with a leather (albeit maybe fake leather) and canvas semi-rigid case. The inside is lined with a micro suede type material and has a pull string so that you can get the filter out of the case without touching the glass. This pull string raises the filter up out of the pocket of the case much like some wallets that have interior pull strings to push out credit cards. Overall, I like the filter and am impressed with the amount of energy invested in the case. These seems like a quality product to me

UV filters are mostly used just to protect the front of your lens. One of the biggest arguments against them, however, is that by using one you are putting a lower quality piece of glass in front of your expensive glass. This can lead to negative impacts in your picture quality such as loss in sharpness, extra glare, loss in contrast, etc. So with that being said, the best thing a UV filter can do is be as unnoticeable as possible and that is exactly what this K&F filter is. I use this filter on my Tampon 70-200 2.8 G2 and I can confidently say I have not experienced any negative impacts on my pictures. I have experienced no glare, no vignetting, and no effects on the image quality. This does perform better than the cheaper UV filters I've bought from amazon in the past. If you have a pro-grade lens and want to protect the front element, I would recommend investing in this UV filter rather than one of the cheaper ones. I think that if you went the cheaper route, you'd either find yourself coming back to get this one or getting frustrated with using a UV filter in general.

got this UV protection filter for my dslr lens after scratching another one. This lens is slim and fits well. It is great for adding a layer of protection to your lens. This filter comes in a very nice case for storage. I don’t notice a huge difference in my photos with and without, but the added protection for my lens is worth it.

This filter, if nothing else, helps keep my marriage on an even keel. Now I won't rehash the old UV vs non-UV filter debate, but personally I don't really feel I need a UV filter on my DSLR lenses, and if I were the only person using my cameras I wouldn't bother at all as I'm extremely careful with all of my equipment. My wife, on the other hand... Every time my wife takes out one of my cameras she treats it the same way she treats her sunglasses (lenses down on the dashboard of her car, jamming them in her pockets without a case or a second thought, smudges... just... everywhere. Oh, the humanity). When it comes to optical equipment she's history's greatest monster, a true menace to glass, but complaining about this to her will only ever end in a resentful argument. So the solution? A high quality UV filter that will protect my lenses without reducing image quality. I've tried cheap filters in the past that I've ended up removing every time I take a shot because there's noticeable degradation in the results, but as this is a high quality filter I can't see any different in the final product with or without the filter. All I see is a clean, scratch- and fingerprint-free lens coming back to me safe and sound, and that's worth its weight in gold.