Are 27" iMac 5k Retinas PWM Free? (Flicker Free)

Discussion in 'iMac' started by thinkertoy, May 18, 2016.

  1. thinkertoy macrumors newbie

    Joined:
    May 18, 2016
    #1
    Hey guys,

    A thank you in advance!

    Do you know if the late 2015 27" iMac 5k Retina are PWM free? (flicker free)

    I had eye surgery and am sensitive to PWM based screens.

    Anyone know?
     
  2. dreadnull macrumors newbie

    Joined:
    Jun 20, 2009
    Location:
    Sweden
    #2
  3. thinkertoy thread starter macrumors newbie

    Joined:
    May 18, 2016
    #3
    Hey just a quick update.

    I called Apple and they connected me to their senior support.

    If you boot up the iMac in "Safe Mode" by holding down the shift key. Then proceed to record the screen with a 240 FPS (slow mo) on iPhone 6s you can clearly see the flicker taking place. When it's running in full mode, I'm sure the flicker is a VERY high frequency one but it's still there.
     

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