A Step-Up Ring expands the compatibility range for your filters to fit smaller diameter camera lenses. For example, our 67mm-77mm Step-Up Ring would allow your 77mm filter to fit your favorite 67mm lens. Featuring a deep knurled, CNC machined brass frame for easy mounting and durability, plus an electroplated matte black finish to block unwanted reflections, our Step-Up Ring is designed for production-grade use, out in the elements or in the studio.