I have to admit that I didn't buy the filter primarily as a UV filter, but rather as a protection for the lens. I was a bit skeptical because some other buyers wrote that the filter was scratched or dirty. I cannot confirm this. It was packaged well and securely, and thanks to the padding and plastic box, you can store it safely away when not in use. In terms of image technology, I didn't notice any real difference when taking pictures - but it has to be said that I'm not a professional. I didn't notice any vignetting either.

Delivered in a plastic box that protects it well, the filter looks very nice and the polarization works well. I will also use it mounted on the lens to protect it. Useful and high quality

A dirty filter arrived, it wasn't just dust and after 10 minutes of cleaning with a special liquid and a lot of attention, it went away. I contacted the manufacturer and after a few days he replied and sent me a new filter to replace, recommended!

K&F makes decent gear for the money I found and this UV lens filter is no different. In all honesty, this is extremely well made, offering a quality finish and the feel of a seriously expensive kit. I appreciate that the jury is out on whether or not a UV filter is needed and I have no real feelings on the subject. However, what I like is that using a UV filter prevents damage to my actual lens within reason. Okay, I understand that if I drop my camera off the back of a truck it won't survive, but this lens filter will prevent minor scratches and swarf. It also keeps my fingers away from the lens and because it's flat it's easy to clean thoroughly with a cloth. Overall a no-brainer for me. I always put a UV filter on my lenses immediately after purchase just to give a bit of protection and K&F has some great filters for absolutely reasonable money.

bought this lens filter because I was looking for a filter no thicker than 3mm that would fit in a new Haoge lens hood (which cannot take thick filters) for my X100V to protect the lens and the camera to make weatherproof. If you don't know anything about the new X100V, you need a filter that is weatherproof. After some searching for a 3mm thick filter I found this filter from K&F Concepts on Amazon. I was skeptical that it would only cost £5.99 and there have been some complaints of a color cast. However, I thought I'd give it up for the price. The box it arrived in isn't the best, but it did its job and the filter arrived unmarked. I held it over a white surface and I could actually see a slight shade of brown. However, I don't see any color cast in the pictures. If you hold the filter up to the light you can see a purple reflection. I have tried to show this in the pictures but there is some fading. It looks very similar to the anti-reflective coating you have on glasses - I don't mind that. Overall I'm amazed, it's actually a really good filter with good spread and no obvious ghosting — I shot in the sun yesterday and it worked really well. I've bought far more expensive filters in the past that weren't as good. Recommended — consider buying a second one as a spare!

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.

Arrived on time. Well done; very thin; light side knots make assembly and disassembly easier, more than acceptable anti-reflective treatment. Excellent value for money (not for professional use). I use it as a front lens protector for the lens. satisfied.

bought this filter for my 50mm Canon 1.8 (49mm diameter). I decided to buy it to protect the lens from scratches and dust and to have a higher contrast in the photos. The purchased filter fully copes with these tasks, in addition, the materials are resistant and the price is very competitive compared to filters from other brands. I recommend buying.

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.

Hardly any reflections or other image effects compared to other filters. And for the price