This is a popular NiSi filter. It's a filter that suppresses reflections and is useful not only for stills but also for video. There are fine scratches on the filter surface. *Please check the photos. Since it's on the front of the lens, I personally didn't find it to affect my shooting, but if you're concerned, please refrain from purchasing. Comparison images: 13th photo: without filter 14th photo: with filter The 72mm PRO Nano CPL filter features nano-coating and high definition, and uses a unique polarizing film. - Brand: NiSi - Model Name: PRO Nano CPL - Size: 72mm - Features: Nano-coating, high definition, unique polarizing film, machined silver filter ring Thank you for viewing.