06-25-2014, 12:05 PM
There is a substantial difference between now and then ( the 70s ).
AF lenses have a comparatively small focus group - because AF motors work faster with a lower weight unit - and, and that's worse - the focus group has a low friction implementation. Or in other words - the focus group is rather 'loosely' mounted - because AF motors don't like friction either. An inferior centering compared to manual focus lenses is therefore inevitable. Add optical image stabilization on top ...
AF lenses have a comparatively small focus group - because AF motors work faster with a lower weight unit - and, and that's worse - the focus group has a low friction implementation. Or in other words - the focus group is rather 'loosely' mounted - because AF motors don't like friction either. An inferior centering compared to manual focus lenses is therefore inevitable. Add optical image stabilization on top ...