So I rarely use a polarizer filter but I keep telling myself that I should be and I need to learn how to use it. I was hesitant to spend a ton a money on a filter I may not like from trusted name brand filters I prefer but at the same time I hated the idea of using some cheap quality less than $20 filter because they usually don't work or have issues.When K&F offered this lens I had to get my hands on one of them. K&F isn't a top premium brand, but they offer a good quality budget friendly beginner filters that are good quality lenses and features that some premium branded filters have but cost a lot more.As to this filter its a great quality filter, its a basic multi coated (they offer a more expensive filter with more features that professional photographers may need). I haven't seen any quality issues or issues with images from the camera. My camera has some sensor issues in low light. Images sometimes have a lot of noise (when the settings say they shouldn't).The picture I took are with the filter after some post editing to correct the noise issues and brighten up the picture (polarizing lens will darken images if you do not adjust settings, and still may darken anyways. It generally can be corrected in post)I haven't really had the chance to use the filter during a day when it was bright and sunny and in the right position for the best pictures. But the filter does a great job at blocking glare on cloudy days.The only issue I have is the lens attracts dust. I have to use a rocket blower, lens pen or microfiber cloth every few minutes to remove dust.This a great filter for beginners and the average user but if you are professional with a bigger budget, I would look for a professional filter.