Canon B4 2/3" Lens Mount to EOS EF Adapter Mount For Canon EOS 5D2 60D D90 The lens adapter is all metal and fits nicely between the lens and the camera Applicable models: all Canon EF interface camera or camcorder can be used,Can infinity focus, M file operations, manual focus Use your high quality 2/3" broadcast glass on your EOS cameras You can get the image without vignette only at telephoto end ( up to 130mm) and 2X extender Please note that 2/3" lenses do not cover APS-C sensor even with 2X extender