Hi John,

Thanks for the reply!

I've read all the docs I could find but it feels like each algorithm still suffers the same fate with my Olympus body+lens.

My hypothesis is that moving 5 steps inward 10 times does NOT equate to the same actual focusing distance as moving 50 steps outward 1 time on my body+lens. This *may* have to do with the fact that on Olympus bodies+lenses, when you engage manual focus it is actually focus by wire and it is not linear. I.e., if you turn the focus ring quickly, it will change a great deal of focus. But if you turn the focus ring very slowly but the same distance as when you turned it quickly, it will actually change the focus a great deal less. (Much like the inertial scrolling on touch devices).

Now I presume the reason for moving inward in small increments and then moving back out in one large increment is to minimize backlash on the focusing mechanism, but for me it's not entirely accurate. So possible solutions (at least in my eyes) would be to 1) lock the step size and only move in small steps in one direction (backlash be damned, of course) or 2) have some sort of user configuration option to define how far to move outward again when trying to find the sweet spot on the V-curve.

I hope this all makes sense ... I just don't know if this is an improvement that hasn't been considered because I'm guessing not a lot of Olympus users are running EKOS or if there is actually already a solution/workaround that exists, I just haven't found it yet. Like I said, very new to EKOS because it hasn't always played well with Olympus cameras (not EKOS' fault, but rather Olympus ... the libgphoto2 folks are doing their best to support this proprietary camera).

Cheers!

-Abe

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