Metabones Canon EF Lens to Sony E-mount T Speed Booster ULTRA 0.71x II.
Pure phase-detection autofocus support on A9, A7III, A7RIII, A7RII, A7II, A6600, A6500, A6400, A6300 and A6100. On Sony A9, only phase-detection autofocus is supported. Contrast-detection autofocus may not work satisfactorily.