This adapter ring/step-up ring allows you to use accessories like UV filters, polarizing filters (CPL filters), macro/close-up filters, neutral density (ND) filters, FLD filters, or other accessories with a larger diameter on a lens with a smaller diameter. No need to buy new lenses or accessories to switch between different lenses! You can use filters like UV, polarizing (CPL), macro/close-up, ND, and FLD filters on various lenses with this adapter ring. Note: We always recommend having a basic filter on all your lenses, even those not currently using filters, to protect them from scratches, grease, and marks. Size: 77-82mm (77mm lens and 82mm filter) Filter Material: Metal (high quality) Brand: RISE (UK) Compatible with lenses for cameras from Canon, Nikon, Micro 4/3, Pentax, Samsung, Sony, Leica, and more. Below are Canon lenses compatible with this adapter ring. For other camera brands, check the front of your lens to determine the filter thread size you need. Check the front of your lens to find the filter thread size needed for your adapter ring, then check your filters to find the exact adapter ring size you require. (List of Canon lenses and other lens information removed to comply with instructions)