First of all, I am a fan of K&F Concepts. So far, everything I have bought from them has been of good quality. This filter is no exception. Fits my camera perfectly and to my eye it causes no abnormalities. I can't detect any color cast and the sharpness is not affected. I bought it to protect my lenses when I shoot handheld in harsh environments like construction sites, which I do often. I am very happy with this filter and will continue to be a customer.

I'm actually a fan of K&F products, but this time I'm disappointed. My lens hood doesn't fit the lens when I've screwed on this UV filter. That bothers me so much because I want to reduce flares with a lens hood, especially when there's additional glass in front of the lens. My older UV filter from Hama, which I always used to attach to the Sony 28/2.0, proves that this can basically work. But it's not magnetic and so can't magnetically hold other filters. That's what I found so appealing about this one from K&F. Apart from that, you get a UV filter of the usual high quality at a reasonable price. If you don't use the lens hood anyway, you can certainly buy this one without hesitation. I'll probably only use it rarely.

Lifesaver when I dropped coins under the sofa - magnet saved the day!

I'm a big fan of the magnetic filter kits - this is actually my second one from K&F Concept. The magnets are strong enough to provide secure hold, but are still easy to change without fumbling or fear of dropping. p

These diffusion filters create nice pretty effects in my test shots. I love how they look with warm light, but they create some really fun and cool effects with colorful studio-type lighting as well. I really am happy with this set, and I would recommend it.

I've become a fan of K&F Concept filters. The glass is flawless and the build quality is top notch on this filter. I attached before and after shots using the filter. As you can see this is a strong ND, great for specialty shots. It also comes with a really nice case, and the box converts to a picture frame.

own around a dozen different filters developed by K&F and am a big fan of the UV filters in particular. If you know, you know. I only recently found out they offer FX filters so I was very excited to try this out. Friends: This filter works. Period. Not only does this add a nice halo effect to the faces of your subjects, it also ensures that textures are softened evenly throughout the image. Why is this a big deal? Because with the start of graduate portrait season, this filter makes it easier to touch up acne and scars. Instead of endlessly tweaking the masking and corrections and getting blotchy results, this filter cuts the work in half while keeping your edits consistent with the rest of the unedited image. This simple filter is a game changer!

So I am a big fan of most K&F Filters and this filter is no exception. It worked great on my recent trip to San Deigo for vacation. The only reason I would not give this a 5-Stars is found when the filter is attached to my lens the lens cap keeps falling off.

Since I started testing K&F filters, I have become a big fan of the company. The quality of the filters and construction are excellent. The glass was of exceptional optical clarity and the brass rings are precision machined. I have never had any problems with cross threading or pulling off. The filters go on very smoothly and come off just as smoothly.

They are all filters that have just enough friction to stay where you put them, but they turn buttery smooth on the camera so you don't have to worry about moving your camera around on the tripod. They are just a real joy to use. This Euler filter per check mark has corresponding markings on the edge so you know which stop you're at, and it has a little tab that makes it easy to rotate the filter. It is very unobtrusive and should not interfere with your image, i.e. no vignetting.

In the old days, one problem with variable neutral density filters was that you would see this artifact of the two polarized plates crossing and these optical "X" artifacts in your image. I believe the newer ones used spiral circular polarization so you get an image without artifacts.

This filter does exactly what it is supposed to do, darken your image to allow longer exposures, or just block out extreme light and glare on a very bright day.

One thing that strikes me about this filter is that its metering is extremely accurate. If you say it for four stops and then take it off and lower your camera by stops, the lighting will appear identical, although there will be a little more glare without the filter because the polarization also reduces the glare.

Another optically perfect excellent filter from K&F.