77mm HD MCUV Protection Filter 28 Multi-Coated Filter - Nano-Xcel series Toughened Glass

Just as other reviewers said, this filter is extremely clear. I can't even see the filter glass in front of my lens front element unless I put a bright light right next to it for a reflection. It's that clear.

The special knurling on the sides (if you want to call it that) is very grippy too, so you can easily get the filter very secure, which is great if you like to leave the filter on indefinitely like I do.

The filter edge does not bulge out at all, so it doesn't interfere with putting my lens hood on, and even being low-profile, it has enough threads on the outside for my polarizer to fully thread in. There's no vignetting with this filter and my polarizer on the front, even at 17mm on my 17-50.

This is the fourth filter I have bought from K&F (two ND filters, one polarizing) and now this UV protector for my 67mm lens.
They fit perfectly and the lens hood and cap can be easily adjusted.
The packaging is perfect, although it should be noted that the circular box to store it is of very good quality, but excessively large for the filters. They send the same size for all from 43 to 88mm so it is huge even for my 67mm filters, which adds a lot of volume when transporting them.

Large diameter filter (95 mm.) with excellent price / optical quality ratio. Extremely thin ring, almost invisible when mounted on lenses such as the Nikkor 200-500 or 180-600 zooms, which I frequently use for motorsports or aviation photography.
Such large front lenses are the most exposed parts of a photographic equipment and particularly subject to fingerprints, dust or accidental impacts, if a sturdy lens hood is not mounted. These filters secure the front lens while making the shots a little more saturated, but never distorted in color.
I have not detected annoying reflections in the shots.
Very fast and safe shipping.

K&F makes fixed filters and this UV filter is no different. My 24-70 has been naked for a while and I decided it was time to get it a protective UV filter as I've added it back to my rotation of travel lenses so I ordered a matching 77mm Filter. The K&F filter surprised me when I first unpacked it. First, the case is fantastic. It's a smoky transparent hardshell plastic case secured with 4 tabs and a quick twist to lock and unlock. It's a large filter housing as the same housing fits 82mm filters but can also fit smaller filters down to 43mm. And the filters don't slip around. But how? Inside the case are two conical sections made of silicone, a small one with 2 ribs and a large one with 10. The large one has numbers next to each rib indicating the size it fits (43, 46, 49, 52, 55, 58, 62, 67, 72, 77, 82 ). The small one with 2 ribs is meant to hold the opposite end of the filter and stabilize it. As long as your filter is one of the sizes listed, it should fit this housing and be held securely in place by the silicone ridges. Now it holds my single layer filters with no problem, but it doesn't fit my variable ND filters or filters with rotating handles/extensions that protrude. As long as your filter is one of the sizes listed, it should fit this housing and be held securely in place by the silicone ridges. Now it holds my single layer filters with no problem, but it doesn't fit my variable ND filters or filters with rotating handles/extensions that protrude. As long as your filter is one of the sizes listed, it should fit this housing and be held securely in place by the silicone ridges. Now it holds my single layer filters with no problem, but it doesn't fit my variable ND filters or filters with rotating handles/extensions that protrude.

The filter itself is very well made. The aluminum housing has built in two sections with thick knurling, making the filter easy to grab during installation and removal. The filter itself does not noticeably affect my image quality on my 24-70 compared to no filter when viewing an image up to 2x in Lightroom, nor do I notice any significant color cast. For me, the K&F UV filter is well designed and easy to use.

Excellent UV filter to protect your Sony 16-50 lens that I personally mounted on my ZV-E10 mark II. I make this point because all the reviews I've seen talk about this filter with a larger diameter. I took the 40.5 one which is not very popular but is suitable for the Sony 16-50 lens. I highly recommend it, even if it costs more than others

I bought this filter to protect my lens, and I don't regret it. I did some careful testing comparing the image with and without the filter, there is absolutely no difference.

Mounted on a Tamron 150-500 and used for both distant subjects and macro.

Quality filters from K&F Concepts at an affordable price. The filter is slim and easily screws onto my lens. I experience no vignetting with this filter on my 18-45mm kit lens. The lens is clear and provides a layer of protection for my lens. The photos included show the photo taken with no filter attached (the one with the filter in the photo) and then the same shot after I installed the filter. No difference - exactly what I'm looking for. You can't go wrong with K&F concepts - high-end quality at a budget-friendly price.

Some say you don't need this with digital photography, but I've always bought a UV filter to cover my entire lens. No more worries about fingerprints or dirt and dust getting on the lens. Great price and packaged very well, love the case it comes in.

If you are looking for quality protection for your lens, at this price point, K&F Concepts is hard to beat. The quality of the materials, fit and finish. And the overall clarity and protection of this product provides a fantastic way to keep a variety of things from getting to and damaging your more expensive lens.

It is a great comfort to me to have a guard that does its job so well that I don't even know it's there until it's successfully protected me.

Overall this product is very well made, it fits my lens perfectly and does a fantastic job at what it is supposed to do. If you need UV or more importantly damage protection then this is a great choice which I would highly recommend at this price point.

I have attached some pictures and videos to show the quality of the product. I hope you found this information helpful in making your decision.

Bought for a nikon lens, it come in a quality holder and fits a treat. Without paying silly money the quality is good and I am well satisfied.