Retina iMac 5K Display Yellowing

Discussion in 'iMac' started by redheeler, Dec 10, 2014.

  1. redheeler macrumors 603

    redheeler

    Joined:
    Oct 17, 2014
    #1
    I have noticed over the past few weeks that my Retina iMac's display is slightly yellowed. The yellowing is screen-wide, but slightly uneven.

    I have tried to fix the problem by calibrating the color profile for cooler whites, and it did help a little. However, the areas that are slightly more or less yellowed now show up even worse, and I still haven't managed to produce perfect whites.

    I have created this thread to find out if anyone is experiencing this issue on their iMac as well, and also to hear your advice. I know this issue is something that has been around for years.

    I will add that both my rMBPs and the 2010 iMac have warm displays. My iPhone 5s seems to be the only device I have with a perfectly white display, and the difference is noticeable.
     
  2. forg0t macrumors member

    Joined:
    Aug 13, 2014
    #2
    Do you have any pictures? If our screens are yellowing over time evenly, most of us won't be able to tell unless we have another iMac next to it. So AFAIK, mine has either yellowed evenly or has not at all.

    But now I'm curious to what you mean. Picture please.
     
  3. redheeler thread starter macrumors 603

    redheeler

    Joined:
    Oct 17, 2014
    #3
    Here is the best I could come up with to prove there is yellowing.

    iPhone 5s is on the left, iMac on the right. The iMac is on the default color profile.
     

    Attached Files:

  4. steve23094 macrumors 68000

    steve23094

    Joined:
    Apr 23, 2013
    #4
    The fact it's slightly uneven is an issue, but you also mention it's screen wide. You will be able to improve this with a calibration, but don't bother trying to do it by eye you won't get good results, invest in a colourimeter.
     
  5. Bryan Bowler macrumors 68040

    Joined:
    Sep 27, 2008
    #5
    You can't hold your iPhone 5s up to your 5K iMac and compare screens. Each one is very different. For example, your iPhone's color may be running slightly cool, which will make your iMac seem warmer, which usually translates to what most people refer to as yellowing.

    Bryan
     
  6. ra004e, Dec 11, 2014
    Last edited: Dec 11, 2014

    ra004e macrumors regular

    Joined:
    Jun 8, 2009
    #6
    iPhones/iPads usually much higher white point.

    Your iPhone 5s is like 7400K ( more blue )

    http://www.anandtech.com/show/7335/the-iphone-5s-review/12

    6502K is D65 standard most PC/macs shoot for.

    http://www.normankoren.com/makingfineprints1A.html

    However color temp "should be" consistent across the panel, and if not, it can not be fixed using calibration. You can try and calibrate with apple's calibration tool if you don't have access to calibrator. Then see if color still shifts. The i1 Display Pro can measure White Point uniformity across panel. See attached image. This is from a Dell P2415Q, you can see the area in red has much lower white point than the rest of the panel ( white is more "yellow" in that area, not much but there ). This is after calibration.

    If it bothers you should exchange, as it is not the norm, my base 5k is pretty uniform and does not exhibit this behavior.
     

    Attached Files:

  7. carmona macrumors newbie

    Joined:
    May 17, 2014
    #7
    Like mentioned by other people, it's about to which screen your eyes are made to in the second you look at both.

    Anyway, the iPhone calibration isn't reliable. If reliable colors are important to you, be sure you calibrate your iMac with a colorimeter (Spyder4, etc.) and only do color reliable work on your iMac.
     
  8. powerslave65, Dec 18, 2014
    Last edited: Dec 18, 2014

    powerslave65 macrumors regular

    powerslave65

    Joined:
    Mar 21, 2011
    Location:
    Sherman Oaks CA
    #8
    Yellow on the edges usually comes from light bleed on an iMac because it's a backlit LED. It's a
    technological limitation and the only thing you can strive for is less but there is a point at which it will
    not get below. All of them have it.
     
  9. redheeler thread starter macrumors 603

    redheeler

    Joined:
    Oct 17, 2014
    #9
    Sorry to bring back this older thread, but I thought I would post a photo of what I mean by uneven yellowing. The left side is slightly but noticeably warmer than the right:
    Retina iMac Uneven Yellowing.png
    This is my 3rd display, as I've already had it replaced twice for unrelated issues.
     

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