I'm thinking about buying a NEX-6 and using my existing A-mount lenses on it. Lenses do not have in built motors. I am aware that there is the LA-EA1, which can perform AF, but does not have any form of AF drive. Then there is the LA-EA2 which is nearly as big as the NEX camera body and has a semi-transparent mirror, another sensor AND its own autofocus motor. By the time I screw the LA-EA2 onto the nex, it is nearly the same size and weight as my alpha body. Obviously the LA-EA1 has some method of measuring focus and sending signals to a SSM-equiped lens, so why not just sick a motor in the LA-EA1, or mechanically couple to spindle of the E-Mount to an output spindle on the A-Mount? Why should having a mechanical focus drive on the output of the A-mount adapter be depenent on completely replacing the focus system of the NEX with SLT? Isn't there a third-party product that solves this problem more elegantly, albeit with perhaps a slower AF system? Why is non-confusing information on Sony adapters so hard to find? Are they doing this on purpose to cover up some fundamental weakness in the NEX AF system? What am I missing?