K&F Concept 77mm MC UV Protection Filter with 28 Multi-Layer Coatings HD/Hydrophobic/Scratch Resistant Ultra-Slim UV Filter for 77mm Camera Lens (Nano-X Series)

The K&F Concept 58mm MC UV Protection Filter is a standout addition to my camera gear. The 28 multi-layer coatings effectively reduce reflections and UV light, ensuring sharp, vibrant images without any noticeable color shifts or vignetting. The filter is constructed from high-quality Japanese AGC optical glass, providing excellent durability and clarity. Its ultra-slim design allows for easy stacking with other filters, and the ribbed aluminum frame ensures a secure grip for installation and removal. Whether you're a professional photographer or an enthusiast, this filter offers reliable protection for your lens without compromising image quality.Fit:Perfect fit.

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.

Great filter for protecting expensive lenses. My previous filter cost twice as much as this one and actually was a great filter but it didn’t have scratch resistant coatings. Over the course of a couple of years the lens cap actually scratched the old filter along the edges. This filter has the anti scratch protection the other one didn’t and it has anti glare coatings as well. I am unable to detect any difference between images taken with or without the lens filter. Some people prefer to shoot without filters in order to capture the best possible image. I prefer protecting a $1600 lens with a filter that doesn’t affect the image quality in any way I can detect. The filter came with a nice container as well as 3 micro fiber lens cloths. It’s a mid range priced filter and I’m happy with it.

Really high quality glass, and works great. No color issues. Dust cleans very easily, especially with the included lint free wipe.

I pulled the trigger on this filter because it seemed like a nice in between from the $10 filters and the ridiculously expensive filters. I wanted to purchase a UV filter simply for lens protection. A lot of the lenses I use are fairly expensive, and it seems silly to walk around with them unprotected. While I was slightly worried at first that a filter in this price range might degrade some of the image quality with nicer lenses, it's "clear" that it actually enhances it quite a lot. I saw no degradation in sharpness, but colors are a lot better with this filter on, and I can rest easy knowing that my lenses are protected from scratches and debris.They also feel well-built, sleek, and low-profile. They have been usable with the manufactures' lens caps and hoods thus far.I can't give it 5 starts, though, because when stacking other K&F filters on top of this one, they seem to get stuck. I'm not sure if it's the female threads on this filter or the male threads on the filters I'm attempting to stack on top, but it's almost as if they get cross-threaded when you try to separate them (not when you put them on). This makes the filter system slightly less convenient to use overall.

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!

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.

It is incredibly clean and feels like there's no glass on the mount at all. I can tell it's high quality. This is my first time using filters from this brand, and I'm very satisfied. I'm also planning to buy an ND filter, and I’ll definitely go for the 5-stop adjustable ND filter from this brand without hesitation.