Recently I found an article showing Angenieux 12-240mm adapted to be used on Canon 7D making it a 38mm-768mm lens on APC sensor or 24-480mm in 35mm.
Would this set-up work? Angenieux 12-120mm (cameflex) > M4/3 (adapter made by Hawk) > Doubler (teleconverter) > M4/3 to Canon EOS adapter > Canon 7D.