Screen gradient on 20 in imac

Discussion in 'iMac' started by big.birdd, Nov 15, 2007.

  1. big.birdd macrumors member

    big.birdd

    Joined:
    Aug 11, 2007
    Location:
    Melbourne, Australia
    #1
    Hey guys, I'd just like your advice as to whether or not its worth it getting a replacement due to eht screen gradient on my imac. Here are some shots of it. I'm not doing anything graphic artist related btw...

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]

    thanks for your advice!!
    ~Big Bird
     
  2. Nordichund macrumors 6502

    Joined:
    Aug 21, 2007
    Location:
    Oslo, Norway
    #2
    Hi, at the end of the day that is up to you. If you are not happy working with the screen and feel there is something wrong with it, then take it back. It's hard to judge the problem just by looking at the photos, but the top left hand corner does look a different shade from the rest of the screen.
    Good luck.
     
  3. gattotimo macrumors newbie

    Joined:
    Nov 5, 2007
    #3
    But the gradient issue isn't something which affects ALL 20" iMacs? I mean, if you take it back, won't they just give you another one with the same kind of issue? I'm not trolling here, but I read a lot of people complaining about the lower part of the screen being lighter than the upper one and I though it was something related to the screen itself.
     
  4. casjohnr macrumors regular

    Joined:
    Aug 31, 2007
    #4
    Upgrade to Leopard, it somehow seems to make the problem a little better.

    I've got used to it on mine, at the end of the day if it becomes a lawsuit issue they'll replace the thing and I've got my 3 years AppleCare for if they ever change the screen ;)
     
  5. leckie macrumors member

    Joined:
    May 3, 2007
    #5
    I think it is just the way the screens are made, the MacBook suffers from this problem aswell but because it is such a small screen it isn't too bad.
     
  6. AlexisV macrumors 68000

    AlexisV

    Joined:
    Mar 12, 2007
    Location:
    Manchester, UK
    #6
    You have a normal screen. There's nothing wrong with it.

    You won't notice the gradient after a few days of use. Remember to calibrate though!
     
  7. jonnyb macrumors 65816

    Joined:
    Jan 21, 2005
    Location:
    London, UK
    #7
    Can I ask a really dumb question - how do I calibrate? I got my new 20inch Alu yesterday. Thanks!
     
  8. big.birdd thread starter macrumors member

    big.birdd

    Joined:
    Aug 11, 2007
    Location:
    Melbourne, Australia
    #8
    with regards to calibration, i cant see how it helps the gradient, but the calibrating worked wonders for the richness etc of the colours, i just used the built in calibration thing under displays in system prefs!
     
  9. RumMunkey macrumors 6502a

    RumMunkey

    Joined:
    Nov 3, 2006
    Location:
    Canada
    #9
    There are a few threads around here where folks have posted some configuration files you can download and stick in your Colorsync library.

    Try a few of those. I found one that worked really well for the iMac, and even used one somebody created for the MacBooks that makes my PowerBook screen looks way better than it did.
     
  10. Vagrant Pistol macrumors member

    Vagrant Pistol

    Joined:
    Nov 5, 2007
    Location:
    New Jersey
    #10
    Look for this thread title" Free Calibration files for 20" iMac aluminums". I posted three files fro download. :cool:
     
  11. jonnyb macrumors 65816

    Joined:
    Jan 21, 2005
    Location:
    London, UK
    #11
    I found the files already! Many thanks - I'll try them when I get home :)
     
  12. Cloudane macrumors 68000

    Cloudane

    Joined:
    Aug 6, 2007
    Location:
    Sweet Apple Acres
    #12
    Yeah it seems to be normal, I have it on mine. I actually checked a couple of other LCDs including the Powerbook G4 I've been using for 4 years, and they all suffer from it to some extent... the difference with the iMac of course is that it's big bold and in your face, and I think the glossy screen shows it up too, so it's more noticeable. Come to think of it all of Apple's glossy screens (including the iPhone/Touch) have had issues raised on the forums etc so it's probably that which is showing things up.

    You have a few choices:

    * If it's less than 14 days old, you can return it and pay the difference for the 24", which uses a different (higher quality) display technology. You could probably sweet talk your way into avoiding the re-stocking fee... from what I've read here they probably won't even ask for it. (I didn't do this because I prefer the size of the 20" too much, and heard about left/right gradients on the 24...)

    * Contact Applecare, and get it changed. Chances are you'll just get another one with the same "problem". (I didn't do this either... it's flawless in every other way so I didn't fancy getting a different one back with the same display issue *and* a stuck pixel or freezing problems or whatever)

    * Learn to live with it / ignore it. This is what I did. Try to stop doing little tests all the time (setting solid backgrounds, comparing the titlebars at the top vs bottom, etc) and I've found that you rarely notice. You do sometimes, in fact because of it I've started noticing it on other displays where I'd never noticed it before, but the more you filter it out of your mind the less it will bother you.

    Calibrating does help a little, it doesn't fix it because it's essentially backlight bleeding I think (as you see when looking at a black background) but the default calibration is some horrid gamma curve that makes everything look washed out, so it just magnifies the issue. I recommend using SuperCal, as in my experience the built-in calibration is so difficult to do I ended up with some very weird colours. However I ran SuperCal (lengthy but much easier to follow) and it looks brilliant, same colours but without the washout, even at the same overall gamma setting of 1.8. Personally I recommend running it yourself rather than relying on downloading someone else's, as part of calibration (at least without some expensive hardware calibration tool) is your own perception and preference... it's kind of an art form :)

    People who are saying Leopard or various updates helped it, are seeing improvements psychologically IMO. I keep thinking mine's improved a bit over time, but I think that's probably psychological too.
     
  13. big.birdd thread starter macrumors member

    big.birdd

    Joined:
    Aug 11, 2007
    Location:
    Melbourne, Australia
    #13
    thanks for your advice guys, I defininitely wont be sending it back thanks
     

Share This Page