High quality filter No distortion in my photos, which was not the case with the cheap filters tried before. I can just recommend her. Mikaël

For my Panasonic Lumix G lenses, I needed two "protective filters" so that rain and fingerprints can't damage the front lenses. There are different opinions on the net about the effect of UV filters, so I don't want to say anything more about it, but there is a blue-tinted coating on the K&F Concept Pro UV filter, the delivery condition is perfect and the packaging is (especially in view of the the price) can almost be described as luxurious. A first check does not reveal any adverse effects on the image quality, and the slim design means there are no shadows on the 12mm lens. Lens caps continue to fit securely, and the lens hood also fits the lens either way. I see the handy "teeth" on the outer edge of the frame as a big advantage - finally someone has thought along! Especially with the "slim" filters, it is sometimes rather tedious to get them off again after they have been screwed "safely". There are even tools that make this removal possible in the first place. But that's a thing of the past here, with this practical ribbing on the edge it's no longer a problem. At that price you can also have one or two of these filters with you in your camera bag and when the mud has splashed you can quickly put a clean one on - just perfect!

I ran various tests under different lighting conditions. I didn't notice any chromatic changes or flair. Slim, light and the workmanship looks good. I suggest always using a UV filter, especially to protect the lens from dust, water and scratches. Given the price and first impressions I think this product is really good value for money. Amazon flawless as always in 1 day delivery. Recommended.

I now have this amazing filter attached to my Olympus 60mm macro lens. The lens has no lens hood, a bad front cap and obviously no filter. This is now on board, along with a tidy front cap and third-party lens hood. 46mm is a little small and fiddly, but this one has a really good knurled ring that feels good in the hand. The thread is also very smooth and positive. The color balance is imperceptibly different, so it doesn't bother when shooting in well-lit close-ups. I love the improvement on this brilliant lens. ricky

First impression - fits, well packaged and the lens cap from Sigma also holds on. Would I buy again. Image quality has not yet been tested, if necessary I will write something later.

As soon as you open the package you immediately understand that we are dealing with a quality product because it comes with a very nice rigid packaging and the UV filter is sealed separately inside, all for 8€, what can I do say more? I've been trying it on Lumix 25mm f/1.7 for a week and it's perfect: it doesn't change color and saturation at all, for me it's 5 super deserved stars.

I've bought photo material from K&F in the past and have never had any problems. I bought this UV filter for my new 82mm diameter Sigma mainly to protect the lenses from dust and scratches. Easy to assemble, well built, it comes well sealed in a box. It is worth the price paid.

bought this filter for protection against my very sensitive Sigma lens. The requirements I was looking for were therefore: excellent transparency, anti-reflective treatment, good anchoring thread. I put my choice on this filter, which mainly depends on the price. I have to say I was delighted with it. Excellent transparency, tight and stable thread without any backlash, aluminum frame body, and in addition, anti-reflective treatment is very effective, no vignetting phenomenon or chromatic aberration. Arrived in a practical case, closed in a plastic blister and well packaged. Very happy with the purchase even considering the price. I highly recommend it.

Do not reduce too much light entering the housing. I only use it as a protection for the front lens

That's 100% the reason to buy one of these. Think of it like a screen protector for your phone. scratched? throw it away, buy a new one. Dirty or watermarked by the rain? wipe it off The point is that your expensive glass stays safe underneath.