4k iMac Screen/Video issue. Brand new.

Discussion in 'iMac' started by sevoman, May 11, 2016.

  1. sevoman macrumors member


    Jan 23, 2016
    Ancient Egypt
    Just got a brand new 4k iMac.
    I noticed almost immediately when watching YouTube videos that when I scroll down and then scoll back up to the video, there are moments when the picture suddenly becomes saturated/red and then quickly goes back to normal. It's fairly reproducible and I tried on many different YT videos, with the same momentary saturation. I recorded as best I can and caught two instance of this happening. It starts to happen at 0:05 and at 0:12. If you pause it at 0:06 and 0:14 you will see the color shift. Anyone know what this could be? I have other PC's and Macs and when comparing the same videos none of the others seem to exhibit this behaviour.
  2. Samuelsan2001 macrumors 604

    Oct 24, 2013
  3. CPx macrumors 6502a

    Sep 6, 2013
  4. havokalien macrumors 6502a


    Apr 27, 2006
    Kelso, Wa
    try turning off auto brightness in settings and it may take away some of that.

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