I purchased this with Canon lens hood EW-53 for Canon EF-M 15-45mm lens. With this filter installed, I could not put the lens on. I did not have this problem with K&F filter and Canon lens hood for EF-M 18-150mm lens. So I am not sure if this problem is caused by the particular item I received or K&F's 49mm filter.

I recently got a new camera and I always get something to protect my lens and came across with this brand. This lens came in a nice box with protective case and I can tell this is a good quality protection filter and it fits perfectly with my Canon M50 stock lens. I did not have any issues with the image quality of my pictures and videos. I notice that my images are much better with the filters on. So far so good and I am happy with my purchase.

bought this for 16-35mm and works perfect, love the coating

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.

Good quality UV filter. Nice thin design that blend nicely into the lens body. The multi coating adds great value to the filter. Will buy again!

Just got mine today, super sleek looking. Fits perfect on my lens, and the thread is nice and sharp. Overall very pleased with the cost and quality. I’ll recommend this for my pals trying to get cool images through windows or with water in the background!

Look... this is one of those rare gems where you don't have to spend a lot to get a lot. Solid filter. Don't think... just get it.

This is one of two K&F UV filters I've purchased this year. I bought the second one because the first one made a good impression. No optical lab testing at my end, just what I can tell pixel peeping. What I see in images made with these filters was what I expect from UV filters: haze cut to nothing, rich, blue sky, clouds well defined and retaining good detail. No degradation of sharpness, either. Nicely packaged and made, I consider them a good value.

We have an optometrist in the family. That means that we are all very conscientious about our eye health. She has two children and they both had sunglasses as babies. She did this because UV rays can be damaging and can actually end up causing problems like cataracts and macular degeneration down the road. The same reason our family member has a vocal concern about our eye health is the same reason that photographers should use a UV filter. A UV filter is a glass filter that block ultraviolet (UV) rays and protects camera lenses from dust and scratches. With that in mind, I was excited to add the MC UV Protection Filter from K&F Concept to my filter collection.The first time I took this filter out, I was out to dinner with my family. We decided to try out a new restaurant in town that has a rooftop dining room. We arrived and got seated around 6:00 p.m. and the sun was hitting the rooftop full force. I pulled my camera out and screwed the filter into place. It wasn’t difficult to secure on the lens, which was refreshing since some filters don’t like to line up properly sometimes. But this filter twisted on smoothly and without any catches.I’m actually going to back up a moment to say that before I took it out into the blinding sunshine, I did a quick test at home. I simply held the filter with one hand in my photo booth. I looked at my other hand in the light and then moved the filter over top of the exposed hand to see what the difference was. It was interesting to see how much of a difference the filter was making -- even under an LED light. The bluish tint was eliminated and my hand looked warm and like I was viewing it in HD.Now, fast forward to our rooftop dinner and how I noticed the clarity of the images was greatly improved by this very simple filter. I walked around the roof and grabbed a few shots that would normally appears dull in that type of direct sunlight. With the UV filter, they appeared vibrant and clear rather than hazy. I also really like how slim the filter is because it doesn’t add a lot of weight to the existing lens when I’m using it.The K&F Concept UV filter was an unexpected surprise for me. It is really well made and does a great job with filtering sunlight. I love that I have an added layer of protection on my lens when I got out and about and that my outdoor images look better than ever.

Nice quality UV filter! Easy to install. Fits perfect. Almost invisible on the camera lens.