I've bought photo material from K&F in the past and have never had any problems. I bought this UV filter for my new 82mm diameter Sigma mainly to protect the lenses from dust and scratches. Easy to assemble, well built, it comes well sealed in a box. It is worth the price paid.

I bought this for a rarely used camera. It's still a valuable collector's item that I want to keep in excellent condition and that means I had to protect the lens. I only have filters with the Zeiss "T" coating made of German Schott glass on the cameras that I use a lot because I think they are the best multi-coated filters I can afford, but I can't spend the money on them spend on a camera I rarely use.
Any camera that is threaded to accept a filter deserves the protection that comes with a filter mounted in front of the actual camera lens. I would rather risk damaging the AR coating of a filter that can be easily replaced than risk damaging the actual lens on one of my cameras through cleaning and exposure to dust or chemicals in the air.
This brand of filter came carefully packaged and the filter holder that comes with the filter is well designed and provides excellent protection for the filter when it is not on the camera lens as I am using a different type of filter. This filter has multiple AR coatings on both sides of the filter and after comparing the results of identical images taken with the same camera using this filter and one of my prized and now unaffordable Zeiss "T" filters, I can say I see no difference can the results. I'm sure an optical lab could document some differences, but in the real world I can't tell any differences by comparing the test images,
This design works so well that I am slowly replacing the older non-Zeiss filters I have on my older lenses and cameras with these newer designs.

It's pretty amazing to me that you can get an 82mm UV filter with 18 layers of coating for only $20. As far as I can tell, there is no loss of contrast or color shift. If anything, you may experience different reflection patterns at certain angles (which I'm a fan of) and will experiment with that. A UV filter not only protects your lens, but also makes the front element waterproof. And if you've had a chance to play around with magnetic filters before, it works just fine with those too. I plan on buying a few more of these so I always have them on my lenses so I can swap/stack my other magnetic filters in seconds. Highly recommend!

I got the filter for the 55mm Sony/Zeiss lens. The front lens is set back here... but you never know. In any case, the glass is high quality and well coated to allow for high transmission and few reflections. Even in poor lighting, I don't see any flares that wouldn't be there without the filter. I can definitely recommend it.

Bought this for Zeiss 16-35 Very happy with the product. Haven't noticed any issues with image quality compared to and without. The only complaint I can think of is the filter housing. One size fits all and if you have other lenses with different filter threads you won't know what's in the box without opening it unless you sign it.

bought this for a rarely used camera. It's still a valuable collector's item that I want to keep in excellent condition and that means I had to protect the lens. I only have filters with the Zeiss "T" coating made of German Schott glass on the cameras that I use a lot because I think they are the best multi-coated filters I can afford, but I can't spend the money on them spend on a camera I rarely use. Any camera that is threaded to accept a filter deserves the protection that comes with a filter mounted in front of the actual camera lens. I would rather risk damaging the AR coating of a filter that can be easily replaced than risk damaging the actual lens on one of my cameras through cleaning and exposure to dust or chemicals in the air. This brand of filter came carefully packaged and the filter holder that comes with the filter is well designed and provides excellent protection for the filter when it is not on the camera lens as I am using a different type of filter. This filter has multiple AR coatings on both sides of the filter and after comparing the results of identical images taken with the same camera using this filter and one of my prized and now unaffordable Zeiss "T" filters, I can say I see no difference can the results. I'm sure an optical lab could document some differences, but in the real world I can't see any differences when comparing the test images I took with this filter and the Zeiss filters I've used. This design works so well that I am slowly replacing the older non-Zeiss filters I have on my older lenses and cameras with these newer designs.

The K&F Concept K Series 82mm MCUV Pro UV Filter is a must for every photographer. The slim design and high quality construction provide excellent protection for my lenses while minimizing unwanted glare or UV light. The filter's multi-coating ensures excellent image quality with reduced reflections and improved color saturation. With the K&F Concept UV filter, my photos are sharper, clearer and more vibrant. It's a reliable and essential tool that I highly recommend to other photographers.

Glad I bought this K&F Concept Filter Black Diffusion 1/4 82mm filter, the effect in the videos is very pleasing and cinematic.