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  1. #1
    27" iMac slightly lower res / fewer colours

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    Exclamation 27" iMac slightly lower res / fewer colours
    Hi,

    I have a strange little problem. My display has started showing me a slightly simplified colour spectrum. It's not much (and no it's not a Universal Access issue) but it's enough to notice and becoming very annoying when photo editing. I don't think this is a hardware problem as I have run all the diagnositics and everything look fine. I also notice that it is only some programs (Chrome, Bridge CS5) and that all drop shadows look a bit rubbish now.

    I am wondering if anyone else is having this problem. I know this hasn't always been there as I do a LOT of photo editing and noticed the quality drop instantly.

    Any advice or feedback would be appreciated.
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  2. #2
    27" iMac slightly lower res / fewer colours
    Lifeisabeach's Avatar
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    Quote Originally Posted by Budgi View Post
    Hi,

    I have a strange little problem. My display has started showing me a slightly simplified colour spectrum. It's not much (and no it's not a Universal Access issue) but it's enough to notice and becoming very annoying when photo editing. I don't think this is a hardware problem as I have run all the diagnositics and everything look fine. I also notice that it is only some programs (Chrome, Bridge CS5) and that all drop shadows look a bit rubbish now.

    I am wondering if anyone else is having this problem. I know this hasn't always been there as I do a LOT of photo editing and noticed the quality drop instantly.

    Any advice or feedback would be appreciated.
    That's interesting. I see the banding artifact where what should be the drop shadow, if I'm not mistaken. It looks to me like the contrast is set too wide. There's a keyboard combo available to adjust it up or down, if it's enabled. Go to:
    Code:
    System Preferences > Keyboard > Keyboard Shortcuts > Universal Access
    Make sure the Contrast option is marked, and either try those keyboard shortcuts, or make new ones of your choosing.

    If that fails, try the Displays preference pane, then select Color. Select a different calibration profile, or make a new one with the advanced settings enabled.

    Please verify and include the exact model/year of your Mac and OS X version number (available from "About This Mac", then "More Info" on the Apple menu).
    ------
    Links: Onyx | EasyFind | Apple Hardware Test | How to test your hard drive | The Safe Mac Adware Removal Guide | Uninstall MacKeeper
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    Lifeisabeach - Mac-Forums Member of the Month June 2009, Feb 2012, and March 2013.

  3. #3
    27" iMac slightly lower res / fewer colours

    Member Since
    Jan 26, 2009
    Location
    Australia
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    Specs:
    Dual 2.3 GHz PowerPc G5 / Intel Mac Book Pro
    I thought this comment...
    Code:
    System Preferences > Keyboard > Keyboard Shortcuts > Universal Access
    would be equalled out by this comment...

    It's not much (and no it's not a Universal Access issue) but it's enough
    That seems to be the only issue I can find on the forums and it's not that.

  4. #4
    27" iMac slightly lower res / fewer colours
    Lifeisabeach's Avatar
    Member Since
    Sep 30, 2007
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    Quote Originally Posted by Budgi View Post
    I thought this comment...
    Code:
    System Preferences > Keyboard > Keyboard Shortcuts > Universal Access
    would be equalled out by this comment...



    That seems to be the only issue I can find on the forums and it's not that.
    *sigh*
    I have some other ideas, but since it's possible I overlooked a mention from you that you tried them already, I'll save you any further inconvenience.

    Please verify and include the exact model/year of your Mac and OS X version number (available from "About This Mac", then "More Info" on the Apple menu).
    ------
    Links: Onyx | EasyFind | Apple Hardware Test | How to test your hard drive | The Safe Mac Adware Removal Guide | Uninstall MacKeeper
    ------
    Lifeisabeach - Mac-Forums Member of the Month June 2009, Feb 2012, and March 2013.

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