Opteka T-Mount Adapter for Canon EOS 60D, 50D, 40D, 30D, 20D, 7D, 5D, 1D, Rebel T3i, T3, T2i, T1i, XS, XSi, XTi and XT Digital SLR Cameras
An accessory ring which converts the lens mount of your SLR camera to a T-Mount. The compatible Opteka T-Mount System makes it possible to use most any single lens reflex camera in combination with various front camera attachments such as telescopes, mirror lenses, slide duplicators...etc. The T-Mount is a metal connector that screws onto the compatible front attachment and allows this combination to be coupled to your SLR camera lens mount.