Center without relying on sync slew. Sync optional at end. I provided tested code.
Autofocus choice of direction. Increasing or decreasing. Right now this required an electronic or mechanical fix. The user should just indicate which way to take the focus curve and how much backlash there is. Then the backlash compensation direction would be known.
Delay any image after focus change. I cannot use autofocus with some cameras without this.
Display autofocus result immediately when it is known and before prompting for new curve. I cannot tell if the result is good or not if I don't know what it is.
Frank