A7RII and Contax N/645 lens, fast AF (thru. Fringer adapter Mk2/Mk3)

When connected to A7RII through Fringer adapter MK2/Mk3, Contax N and 645 lenses are capable of doing fast AF through phase detection. This is the demo of N24-85, N50, N70-300, N70-200, C645 140/2.8 and C645 210/4 fast AF. Check for more details.