I've bought a few K&F items in the past and always found them to be surprisingly good quality given their low cost. When my Hoya CPL filter got scratched recently, instead of replacing it with one of the usual offerings I thought I'd try a K&F and I've got to say that for the price I'm blown away by this filter having just used it on a Canon 80D for two weeks on a recent Scottish trip. It's much nicer than the Hoya it replaces, that gave a blueish cast on the photos which had to be dialed out in Photoshop, the K&F in comparison gives a much more neutral effect and really lives up to its "True Colour" name. The polarisng effect of the K&F is also not as intense as the Hoya, it's more natural and subdued giving a really nice effect which I love. I'm going to get two more of these for different diameter lenses - they're cheap enough and the quality is excellent. I've read a few comments regarding the K&F becoming stuck on the lens and difficult to remove but this is not something I've experienced so far. I just don't put it on tight to begin with and I've had no problems with removing it whatsoever. For anyone looking for a decent CPL filter then this is hard to beat - even if you include much more expensive ones in your search.