Is all polarizing filter the same? No, that's not the case. Polarizing filters do polarize to a greater or lesser extent. This reflects the price you're paying for them. But there are other things as well: A really good filter doesn't have a light metal mount, as this could twist under pressure when screwing in, causing the filter to seize up. This polarizing filter has a heavy and precisely crafted brass mount, and the rotating ring for adjusting the polarizing filter to the correct position rotates smoothly and effortlessly. Additional ridges on the mount prevent fingers from slipping when turning. This is desperately needed, as the filter is designed as a "slim version" with a very short aperture to also be suitable for wide-angle lenses. The filter's coating looks impressive, and I'm inclined to believe it's particularly effective at preventing reflections (although this could only be truly proven in a comparison test). The polarizing effect is very good, and no color deviation is discernible in Lightroom. I've never owned a photographic filter that was so elaborately packaged—indeed, almost "staged"—as this professional filter from the Chinese manufacturer Shenzen Zhuo Er. The manufacturer wants to underscore its claim to be at the forefront of its market segment. I readily believe that it can do this. The filter's manufacturing quality easily rivals any Heliopan or Rodenstock filter. Of course, it also costs accordingly. I'd happily purchase a few more filters of this type—I've acquired a taste for them. Do you automatically take better pictures by using such an expensive filter? Absolutely not. If you've been satisfied with your image results so far, this filter won't open up a "completely new world" for you. But if you're eager for every technical possibility of improving quality, then, yes, then you should really consider switching to these fantastic filters.