K&F Concept 86mm MC UV Protection Filter with 28 Multi-Layer Coatings HD/Hydrophobic/Scratch Resistant Ultra-Slim UV Filter for 86mm Camera Lens (Nano-X Series)

Unlike some people I believe that a UV filter is a must on a lens for the protection it provides and for the ability to decrease atmospheric haze and glare. But having said that I also believe that the filter must be of high quality with good coatings so that it does not negatively impact your photos. I think that this filter meets these requirements.I have run some simple test taking the same photo with & without the filter and see no negative impact from the filter. The filter is also a good quality filter from a construction perspective and I see it lasting and providing a useful function for a long time, and for a good price.

I have now purchased several (3) of these polarizers for different sized lens. Good glass, coatings and optics. While these products are not the cheapest, they are not a cheaply made product or a waste of money. Some have complained that the rotating lens is sticky. I've never observed this, among the 3 sizes I have (including the latest 72mm). They are thin, so if your fingers are not nimble you might be challenged.

Fantastic UV filter.I have in March Majesta rifle scope and I use threaded filters for the front and back of the scope to protect my lens and they worked wonderfully with no discernible light loss.I highly recommend them

Noticed that my existing 77mm UV filter (not a KEF branded filter) had a mark on the surface just before a trip. Quickly placed an order for the KEF Nano-X series MC coated filter yesterday and it arrived today. Have used KEF filters before and liked their quality and value for the money. The Nano-X series has all the specs I was looking for (Nano coated, mc, quality glass, and ultra slim). The ribbed styled ring aids in easier install and removal. Didn't want to spend more money on similar specs in other filters with no noticeable difference in picture quality. Rated 5-stars.Update: Decided to purchase a second one (77mm) for a new lens I just brought (Nikon 24-120 Z). Great product!

Seems okay but came with dirty filter lenses. Easy to clean, as several cleaning cloths came with it.

I have seldom give a 5-star rating to manufacturers and this one is truly exceptional.I see a ton of thoughts behind everything and a deep desire to solve the customer's problem.It came with 3 microfiber cloth and packaging is superior to Zeiss. The framing ring of the filter is anodized and very high quality with some corrugated edges to provide grip.Inside the holding box, they even thought about sticking 2 pieces of rubber stopper to prevent the filter from sliding when it is being shipped.The glass is crystal clear and has absolutely no dust. It must have been a heck of a clean room for manufacturing.I'll report back when I start using it on my Nikkor lens. If all is well, I'll wave goodbye to Zeiss, Hoya and B+W.

Why expensive brands when there's K&F? Works perfect.

I bought this just to be a protective element for the lens. A common concern people have with these filters is the idea that adding more glass onto an expensive lens ruins the picture quality. However, I opened the package and was disappointed to find out they forgot to put the glass in . . . so I thought. The glass element on this filter is so clean and so clear that it's invisible, It looked like an empty circle. Absolutely no impact on image quality but a welcome safety barrier for the front element of my lens!