Good protection for the lens, UV does the job, you can put the lens cover back on. Right price.

bought the product for my Sigma 16 F1.4 with a diameter of 67mm to have the dual function of UV filter and lens protection. The product comes in a cardboard box, inside which there is a plastic box with anti-shock polystyrene. So I have to say that the packaging is essential but also suitable for later storage. The filter has written for the characteristics and to understand the assembly noise on the fly in case you can't see the thread in the dark. To use, simply mount it by screwing it onto the lens like all standard filters and you're ready to shoot. Before mounting I had tested the lens and noticed some reflections in rare cases. I must say that with the filter they are certainly limited, but I do not think they are 100% excluded. For this reason I have limited the rating to 4 stars, although probably no filter, not even according to well-known brands, could do better. Good overall, it looks solid and is better value for money on Amazon. Recommended.

got mine yesterday and said I would test performance with and without this filter. I have a vintage Minolta lens that was from my grandfather so it is very valuable to me and I wanted to avoid damaging it. As the title suggests, there is slight yellowing, vignettes, and a barely noticeable loss of sharpness that I can detect when viewing it on my computer screen, although the compressed images I've added may not fully show. Resolution of the original images. Let's break down what I found: The Yellowing - This filter has a slight yellow tint which makes sense, it's a UV filter so the shorter wavelength light might have trouble getting through. This isn't a problem for me as it can easily be adjusted and fixed in software after adding a little more blue, or this might get you better results in the field depending on your conditions The vignette - This is very easy though noticeable when looking at the same image with the filter on and off, again this is not a problem for me as it can be fixed or tweaked in software so that it is indistinguishable The sharpness loss - the sharpness loss is even at 400% barely noticeable, which is great. After that, if you just add 1 percent more sharpness, that's no problem for me. You have to view the photo at 200% resolution or higher to notice a loss, and even if you do see that, you have to look carefully. For what I paid for this filter, I'm happy to know that it doesn't affect my image in any way and that it acts as a shield, protecting my glass from scratches and dust. I will be adding more of these for my lenses and will not be forced to remove the filter to take a photo like I would with others. Great product, highly recommend!

The K&F Concept K-Series 62MM MCUV Pro UV Filter Slim MC UV Protection Filter Ultraviolet Filter (62MM) appears to be a high quality filter designed to protect the lens and reduce UV rays. The filter consists of several layers that are intended to ensure high light transmission and low reflection. The slim design makes it possible to use the filter on wide-angle lenses without causing vignetting. All in all, the K&F Concept K-Series 62MM MCUV Pro UV Filter Slim MC UV Protection Filter Ultraviolet Filter (62MM) seems to be a good choice for anyone looking to protect their lenses and improve image quality.

Thin lip, strong threading, coating looks even. Using both of them on orion 2x54 objective lens. Can't see any CA or distortion. Coating resist to cheap cotton shirts. Both came with good packaging and QA/QC. Digital picture effectiveness is unknown though. I would see this working as a protective cap for an asahi 50 f1.4

I would buy again with confidence.

K&F is my go to for lens filters and most of my camera equipment. Their build quality is consistently top tier, and the prices are very reasonable, making them an excellent choice for both amateur and professional photographers alike. Recently, I purchased two UV filters for my Canon RF lens, and once again, K&F did not disappoint. The clarity and quality of these filters are outstanding. They simply work, there's no noticeable distortion or color shift, and they provide excellent protection for my lenses. Also their packaging always gives off premium quality vibes.

Order arrived on time.
Well packaged.
Perfect lens filter, with good quality and very affordable.
Highly recommended.

This is a good filter and they designed it with a well made edge, meaning for a slim filter, it feels very nice and secure on your fingers. The pits are deep enough for your fingers to twist the filter on to the lens. You can really feel it. Unfortunately I have to return two of them as they don’t work well with the Panasonic HC-V770 camcorder and the Panasonic lens hood. It’s so thin that there’s not enough thickness for the hood to stay on.

Came in new condition, ready to be installed. Great price.

The UV filter has a high-quality and clean finish. I really like the blue-purple reflection and it really makes a difference. I didn't notice any changes in image quality, but there could be a slightly different, increased lens flare. If you like the look, you will be satisfied with the filter. In any case, I can recommend it as protection for the lens!