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)

I previously purchased this filter in a different size and was highly impressed. The slim design makes it almost unnoticeable, but the filter is still of high quality. The filter functions well. I believe this slim design also helps in the reduction of any impact the filter may have on photo quality, and color accuracy. The filter may also adds a layer of lens protection, in case of unfortunate situations like accidentally bumping into an object. This in addition to reducing dust on the lens itself. The previous iteration of the filter (67mm) proved to be very durable ( as it still sits on my lens). My most recent purchase (December 2025) had to be replaced, as it apparently spontaneously shattered. I discovered this when I was retrieving my camera from its bag (Lowepro), and heard the jingle-jangle of broken glass. My lens cap was still perfectly attached, hence my befuddlement. Overall, a quality product, despite the unfortunate occurance.

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.

I have these on at all times because they barely darken anything. Meaning high light transmission. I had to really look at some scopes to find a difference. I gave up and just assumed any light loss is meaningless. For sharpness, stopped down in the sweet spot with the new Sigma Art lenses, I can't tell a difference on my 42 mp camera. My Tamron 35-150 is pretty much perfect for 42 and 61 mp sensors, and its the same. Even the g masters my friends have shown it is pretty much the same with or without it. But, I can tell better contrast and micro contrast with landscape and city shape. It's basically dehaze in camera. And, a bit of clarity. I have had photography friends what I'm doing in editing to get clearer images, and it is using these and a cpl if I need to. Also, my lenses are expensive. They're insured but I would die if a front element got scratched. I work a lot of events and shoot video in weird places. Many years ago, I did actually trip and my Sigma 85 hit a rock. I didn't want to look. Luckily the lens was perfect and this filter took the hard scratch. Ever since, I buy knf concept nanox uvs for all my lenses. I spend the bit of extra money because the lens sharpness is intact. Color is all there. Dehaze in a filter. And, if a tragedy were to happen, I am out like $40 over $2,000. Or waiting forever for my replacement and insurance claim to go through.

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.

Excellent lens filter. High quality. Great price!

First off, a disclaimer: I'm a hobbyist and not a professional/pixel-peeper who absolutely needs the best image quality. Most of my images end up on social media where they can't even be uploaded at full resolution, so having flawless image quality is not completely necessary for me. That being said, I obviously don't want to degrade the quality noticeably, considering I own sharp lenses. My main goal with using UV filters is to protect my lenses from the elements, including fingerprints, dust/dirt, and add some additional weatherproofing (as I mainly shoot outdoors, like on hikes). It's so much easier to clean these flat multicoated UV filters than it is to clean curved lenses, especially those that don't have high-end coatings. Even if these cause minor image quality degradation, I would be willing to live with that to gain the advantages of protecting my lenses and easier cleaning. Fingerprints slide right off of these thanks to the coatings, which you usually can't get with other brands unless you spend a lot more money (e.g. Hoya, B+W). I took a number of test photos with and without the filter to try and find any obvious quality loss. I couldn't spot anything blatant, even on the edges, which is good enough for me. The only obvious issue with these filters is the ghosting when shooting directly into bright light sources, like the sun or lightbulbs. These have very noticeable green ghosting that isn't present without the filter when shooting the exact same light sources (tested on multiple lenses). I usually try to avoid shooting at bright lights, but it may be unavoidable for certain situations, so please consider this before you buy this filter. I haven't used more expensive filters so I don't know if this is simply an unavoidable downside of using ANY filters, but I'm assuming it's pretty common with any filter brand. However, the blue/green tint is a little distracting from these specific filters. It's not worth returning them over, but I'll need to keep this in mind and remove them if I find myself in a situation where ghosting could be an issue. Otherwise, these are great for the money and offer solid protection without causing a big hit to image quality.

This ain't your run of the mill uv lens. This is a quality piece of optic glass. Good construction. This company seems to have a lot of pride in their product and it shows.

Ottimo dal punto di vista del filetto e della trasparenza

كأول نظره كويسه باقي عالتجربه اشوف

Received the filter in a nicely wrapped package. The make of this filter is of high quality. Metal ring is made of hard metal and does not jam on the lens thread. No vignetting on my 18mm fujinon (28mm equiv). No color cast. Cleans easily. It does a very good job protecting the lens and adds no hassles at all.

Tamron 150-600mm için aldım.İyi bir ürün

El pedido llego en tiempo y forma, el paquete llego tal cual se ven las imágenes en la pagina, envío seguro y en tiempo y forma. El producto se ve bien estoy satisfecho con la compra, la calidad del producto es muy buena y concuerda con la descripción del producto en la publicidad. Lo acabo de recibir y ya lo instale en un lente de canon RF 24 70 2.8, sin ningún problema quedo pendiente ver la calidad de las fotos. pero espero que me ayude a proteger el lente