Finally had enough clear skies to try it out. First [reasonably] focused the system, then started A/F with step size of 22 and 9 data points, star size of 6 at 1x1 binning. I watched it go back and forth and acquire what it thinks is focus. I never got a perfect V shaped plot of data point metrics. But…
Contemplating later, I realized that I might want to use 3 data points for focusing after the initial focus is established using 9 points, and break the step size down to a lower value so the movement is more refined and basically right behind and in front of what is the current state of focus at the time.
Anyone has any thoughts on that and also why a perfect V (or near perfect) is sometimes not achieved?