Confirming that 3C is fully compatible with the new v3.1 update for the Metabones Smart Adapter so you can now use all of the focus control functions with your adapted EF lenses. I've been testing it today with a broad range of different types of EF lenses (Canon primes, Canon EF-S wide zoom, Canon long L zoom, Tamron superzoom and the Sigma ART18-35mm) and I have to say that the focus transitions are generally actually smoother than they are with most of the native MFT lenses.