2X CONVERTER FOR Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary Lens FOR CANON
2X ZOOM CONVERTER FORSigma 150-600mm f/5-6.3 DG OS HSM Contemporary Lens. 2X OPTICAL CONVERTER FOR CANON. 2.2X OPTICAL CONVERTER FOR CANON EOS. MOUNTS ON ANY CANON EOS REBEL AND DOUBLES YOUR CURRENT LENS.