Celestron 93419 T-Ring for 35 mm Canon EOS Camera (Black) This Celestron T-Ring attaches to Canon EOS DSLR and SLR camera bodies Sturdy bayonet flange locks in place just like a lens, providing secure contact Attaches to a variety of camera adapters and accessories via standard T-Threads This T-Ring fits EOS model cameras only. It will not work with other Canon camera bodies.