08-03-2016, 11:29 AM
They probably decided to implement AF only in the lenses that are available solely in the E mount - read: the FE ones - because they tend to make most of their products in every applicable mount, and the electronic protocols for the EOS-M and Fuji fittings are not open-source. There is probably some kind of business logic (not understandable to me) that prevents them from releasing the lenses with AF/AE in E and µ4/3 mounts, and "dumb" for everything else.