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E-M1 PDAF Calibration

Discussion in 'Open Discussion' started by tradesmith45, May 15, 2015.

  1. tradesmith45

    tradesmith45 Mu-43 All-Pro

    Dec 13, 2012
    Oregon
    Any one out there done a full 37 point AF calibration on their E-M1?

    How did you do it?

    What did you find?
     
  2. Phocal

    Phocal Mu-43 Hall of Famer

    Jan 3, 2014
    I used the Focus Tune system to do mine with the ZD 150mm.
     
  3. faithblinded

    faithblinded Mu-43 Top Veteran

    929
    Nov 25, 2014
    Cleveland, OH
    Ken
    That would take forever. I did it for the center point, and hope that field curvature is so minimal at super tele that it's good enough for all points. If you needed to alter some points out to the side I would say your lens is not only off focus, but one of the elements is decentered. At that point I'd be sending it to Olympus.

    I had an email from them saying they'd be very glad to dial in the focus on my 300 for me, but made no mention what that service might cost me. I'm assuming that would mean a resetting of the lens to a zero state so that it works on any em1 out of the box, with no adjustment. I'm considering it, once the spring migration frenzy is finished.
     
  4. tradesmith45

    tradesmith45 Mu-43 All-Pro

    Dec 13, 2012
    Oregon
    Did you run all 37 points separately? Were any significantly different?
     
  5. Phocal

    Phocal Mu-43 Hall of Famer

    Jan 3, 2014
    I only used the center point when determining the setting needed, which I set all focus points to. Then, I did a focus consistency test on the far outside points and got basically the same results as the center (was within 2%).
     
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