Over the years I've tried a number of manufacturers for filters for my camera lenses and when I tried the K&F glass filters I haven't look anywhere else. The K&F Glass filters outperform about 80% of other manufacturers. I'm a long-time nature photographer with scenery and wild animals in their natural habitat. When I'm out in the rainforest focusing on a cougar I want the first shot to be the best as I may not get a second one.
29/08/2025
I have read bad reviews on people getting the filter stuck or it unscrewing during use. If you turn it gently in the correct direction using the ring, you won't have any problems I'd say. For me these work really well on the Sigma lens
28/08/2025
I wanted to play around and try it out. I'm familiar with the principle of a polarizing filter, but I didn't have one yet. Since I have a new camera and lenses, this was the opportunity. Various tests showed this one to be acceptable. It works great, and I didn't notice any degradation in image quality. It's excellent value for money. I would buy it again.
23/08/2025