iMac display changes?

Discussion in 'iMac' started by AdamA9, Jun 9, 2010.

  1. AdamA9 macrumors 65816

    Feb 2, 2010
    Guys, I have an iMac 21.5" and when I start it up the picture is clear, crisp and bright for about 2 seconds before it dims. I've searched and cannot find an auto dimming setting, neither can I see why the colours would look duller than when it's first booting up.

    Does anyone know why it does this, and how I can keep the original brightness from when it first starts?

  2. spinnerlys Guest


    Sep 7, 2008
    forlod bygningen
    System Preferences > Energy Saver > Automatically reduce brightness before display goes to sleep or System Preferences > Displays > Color > Color Profile.

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