Excellent glass is important for any photographer, and the same obviously applies when it comes to filters. With H&Y you will be working with extremely high-quality filters. With the popular K-series, the manufacturer works with Corning Gorilla III glass, rock solid and equipped with various coatings to create the best possible image for you. Besides this high-quality standard, there is another big advantage to this system to discover. Namely, the square and rectangular ND and grey gradient filters can be magnetically stacked onto the K holder. H&Y can be seen as a highly innovative company as they demonstrate with the Revoring. This system is designed to quickly and easily provide your camera with a round filter with Schott glass. The aluminium ring has a clever construction for simple clamping. The ingenious system also allows you to use the Revoring on multiple lenses, as it can be placed on different thread diameters. This makes the Revoring multi-purpose, also for videographers.