>>2862444>a system that moves the whole lens would be big, expensive and slow and might not work for bigger lenses.>not worth it imo. the advantages of old manual lenses are smaller size, lower cost and maybe lower weight. putting some abomination AF system on would defeat all thoseQuite the opposite.
It can be done compactly and effeciently. Pic related.
Of course it only works to 100mm or so, and has issues with extremely heavy lenses (700g plus).