philthejuggler wrote in post #5424866
My lens which I returned focussed perfectly, but the focal plane moved when stopped down a little. I think this was due to a lack of floating elements inside the lens. If this is correct then it cannot be fixed electronically.
The lens actually passes on distance information. It is a matter of a simple table based on distance information and f-stops for the lens to know what to do. The camera tells the lens where to move to, and based on distance and f-stop information it does a look up in the table, and moves accordingly. That there still may be some small shift is logical; the information passed back and forth between camera and lens is digital, not analog, hence information and movement goes in small steps rather than completely fluid.
Regardless of the solution is, it looks like the problem has been solved, to me anyway.
Kind regards, Wim