The Sea & Sea Compact Macro Port 52 is for Sea & Sea RDX housings, to be used with the Tokina AT-X M35 Pro DX 35mm f/2.8 Macro lens with Canon and Nikon cameras, or the Canon EF-S 60mm f/2.8 Macro USM. It will also work with the Canon 60mm Macro lens with the Kenko Teleplus HD 1.4x DGX Teleconverter.