Step-up rings are filter adapters that let you fit a larger filter on a lens with a smaller thread. This category offers Fotocom and Kaiser adapter rings in a wide range of sizes, starting from 37 mm.

Choose a ring by the lens thread and the filter diameter, for example 49 mm to 52 mm or 55 mm to 58 mm. A step-up ring is a practical way to use one larger filter set on all your lenses, and a larger filter also helps avoid vignetting. It is also useful for attaching standard-size filters or converters to compact lenses with a small thread.