must say that I'm glad I did as the filter is very high quality yet affordable. This filter features an aluminum filter frame as well as multi-coated optical glass elements on the front and back and comes with a magnetic filter mount. The quality and craftsmanship of the filter were evident once we received and inspected it. The filter glass remains clear and free of scratches, fingerprints or other marks. The magnetic mounting ring ensures a secure connection to my lenses and does not move or vibrate, and the polarizing wheel rotates effortlessly. The included leather storage pouch is also a plus when it comes to maintaining the condition of the filter when not in use. When I mounted and applied it on some of my photoshoots, especially landscape shots, this filter worked perfectly when the sky darkened, eliminating reflections and increasing the saturation and contrast of my shots, just like an effective polarizer should. The multi-coatings also help minimize flare and improve light transmission. Since the frame depth is practically paper-thin, it is possible to stack it behind other filters without losing image sharpness due to vignetting. In summary, I am pleased with the features of this K&F Concept magnetic circular polarizer. I was very happy to see that it offers all the utility I would expect from a filter of a much higher class and a much more expensive brand name." In summary, for photographers looking for a good CPL filter that is slim and budget-friendly, this is an excellent option.