07-20-2012, 10:37 AM
I think the critical thing is that the AF sensor does not actually see anything in this process. Based on the data tables and the info AF sensor received, camera body sends the data to the lens for the movement.
I guess even for each lens coming out from the same production line there would be tolerances with regard to AF accuracy. Otherwise AF micro adjustment option on the bodies would be meaningless...
I guess even for each lens coming out from the same production line there would be tolerances with regard to AF accuracy. Otherwise AF micro adjustment option on the bodies would be meaningless...