I'd like to share results of my first focusing with the EAF and the linear algorithm: I love it!

Hehe, who would have thought that

If you have time, definitely also gibe Linear 1Pass a try, using the 'Parabolic' or 'Hyperbolic' methods, including weighting. For me, that is even more stable than simple linear.

For the comparison with polynomial: Keep in mind that that one doesn't do any backlash compensation, and does move in both directions. So to do it justice, you'll first have to measure BL, and activate BL compensation in the driver - else the results will be very random...

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