Pink tint to iPad -- when I wear my glasses

Discussion in 'iPad' started by r-sparks, Apr 2, 2012.

  1. r-sparks macrumors 6502

    r-sparks

    Joined:
    Dec 1, 2006
    Location:
    England
    #1
    My iPad 3 has a slight pink tint, which is to say, white backgrounds appear very slightly rosy. This isn't uncommon, from what I read over and over here.

    However, it's slightly worse when I have my glasses on. They're a weak prescription for annoying astigmatism.

    I'm just throwing this out there as an observation, and also wondering why it might be happening. :)

    For those who are seeing a pink tint, do you wear specs? And what happens when you view the screen without them?
     
  2. dgstan macrumors 6502a

    Joined:
    Jun 29, 2010
  3. alau0115 macrumors regular

    Joined:
    Sep 12, 2009
    Location:
    Markham, ON, Canada
    #3
    Yes, I also see pink tint on the right side and a slight green tint on the left side when the screen has a white background. I have read/seen this before in other IPS monitors (eg. Dell U2410) and so I will just live with it.
     
  4. thelookingglass macrumors 68000

    Joined:
    Apr 27, 2005
    #4
    I have a slight pink tint on the top and a slight greenish tint on the bottom. I've noticed that ambient lighting matters a great deal. In well-lit indoor lighting environments, there's virtually no pink tint. In the car, the entire screen seems pinkish.

    I'm wondering if there are screens out there that don't have this issue or if some people just aren't noticing it.
     
  5. jltj macrumors member

    Joined:
    Jul 7, 2008
    #5
    Mine's the same, how pink it is depends on the surrounding light and in the dark, it seems uniformly pink. Also depends on the angle you're using the screen and wether it is in landscape or portrait.

    I only got mine a few days ago, haven't been able to find others to compare with, I'll go to a store tomorrow to have a look at the ones on display. Most of them are set at the brightest setting, where I find the pink is least or not noticeable.

    I also have the feeling that most screens would have uneven colors but people might not be noticing.
     
  6. thelookingglass macrumors 68000

    Joined:
    Apr 27, 2005
    #6
    Yeah, on full brightness the tint is barely noticeable.

    Do you have a white or black iPad? I have white and the tint is especially noticeable because of the contrast with the white bezel. I suspect it'd be less noticeable with a black iPad.
     
  7. jltj macrumors member

    Joined:
    Jul 7, 2008
    #7
    Yep white, and I was thinking exactly that...the pink might be more noticeable cos the white border is such a pure white.

    I'm coming from a the first iPad and never noticed any unevenness in colour the whole time I was using it, but now, looking at it, I actually see that it is there, but extremely slightly, just as you say, the black border might help to hide it.
     
  8. Rjohnny macrumors newbie

    Joined:
    Apr 7, 2012
    #8
    I too have the pink tint and it's especially noticeable under lower brightness , wonder if this is normal?
     
  9. anup0586 macrumors newbie

    Joined:
    Apr 8, 2012
    #9
    Have a pink tint on bottom left corner of ipad 4g 64gb model.
    anyone facing similar issues?

    Attached are the images of the defect and the make of my ipad.

    http://forums.macrumors.com/attachment.php?attachmentid=334756&d=1333898816
     
  10. captmatt macrumors regular

    Joined:
    Oct 23, 2008
    #10
    I have a very slight pink tint on mine but it's uniform laterally. It fades slightly green vertically. Again the green is uniform laterally. I only noticed it because I read one of these threads! (Ignorance is bliss!)

    Yours looks way worse than mine unless the camera is exaggerating it.
     
  11. blulegend macrumors regular

    Joined:
    Apr 15, 2008
    #11
    Following this thread. Mine seems pink in natural light, especially in the car. Indoor with incandescent light it seems perfect. Indoor with fluorescent light I sometimes notice a slight pink on one edge and a slight green on the other.
     
  12. thelookingglass macrumors 68000

    Joined:
    Apr 27, 2005
    #12
    Interesting. I'm starting to get the sense that this may just be an inherent part of these screens. Why then did the iPad 2 not have this issue? They're both IPS displays aren't they?
     
  13. jltj macrumors member

    Joined:
    Jul 7, 2008
    #13
    I don't think it's inherent to the screens, there are plenty of display sets in stores that do not have uneven coloration...It's just bad quality control. Also, not all Apple stores are so accommodating about exchanging for faults. :(
     
  14. thelookingglass macrumors 68000

    Joined:
    Apr 27, 2005
    #14
    But it's tough to see the problem on the display sets in stores. Apple stores have bright fluorescent lighting and the screen is typically set at full brightness. I can't see any discoloration on mine under those circumstances either.
     
  15. mcdj, Apr 8, 2012
    Last edited: Apr 8, 2012

    mcdj macrumors 604

    mcdj

    Joined:
    Jul 10, 2007
    Location:
    NYC
    #15
    The reason the color shifts at slightly different angles, and in different lighting scenarios, has to do with the density of the pixels, and from what I understand, the various treatments the panel gets to allow it to show the most neutral screen color possible.

    Apparently, pure white LEDs are too expensive to mass produce. So panel manufacturers use cheaper colored ones, then try to neutralize that color with phosphors and coatings under the glass. If you've ever really looked at "white" LED Xmas lights, you'll notice they're not really pure white...they often bluish or pinkish. Also, if you compare a standard LCD TV to an LED backlit one, you'll notice the LED ones run a bit bluish or pinkish. This is especially true of Samsung TVs, which all seem to run pink.

    The pink (or yellow) you see in the iPad screen is the color they add in an attempt to neutralize the bluish LEDs. When you are indoors, the backlight of the iPad is generally stronger than the ambient room light, so the effects of the pink correction are not as noticeable. But when you're in bright outdoor light, the ambient light is actually reflecting off of the color treatment, and the backlight is not strong enough to counter the reflected color you see.

    The variable is the amount of treatment the panels get to counteract the base color of the LEDs. Those complaining of yellow or pink screens in all lighting conditions probably have iPads that received too much of the color correcting treatment. Those, like me, who have been complaining of blotchy multicolor panels have probably been receiving panels that did not get treated evenly enough.

    As for the color shift at different angles...This is a byproduct of pixel density.

    Imagine 3 people standing shoulder to shoulder, each holding a 1 foot square piece of colored cellophane. Person 1 is holding a red one. Person 2 is holding a green one. Person 3 is holding a blue one. They are collectively one RGB pixel.

    Now imagine a big room, with 1024 of these groups of 3 people, all standing shoulder to shoulder, all holding red, green and blue sheets of cellophane.

    Now imagine climbing to the top of a tall ladder at one edge of the room and looking down at the crowd. You can see each person, carrying each piece of cellophane, and you can easily make out the individual colors of the pieces of cellophane, even if you climb down the ladder a bit and look across the crowd.

    That's the iPad 2.

    Now the doors of the room open and another 1024 groups of 3 people each all file in, each carrying a piece of colored cellophane. You climb back to the top of the ladder. You can no longer make out individuals...it's just a sea of densely packed people carrying pieces of colored cellophane.

    And if you climb down the ladder a bit (like tilting the screen), you can barely even see the people in the back corner. And instead of looking on to the tops of each sheet of cellophane, you're now looking into the sides of hundreds of them at once...all the colors bleed together. From the left side of the room, you see mostly red cellophane, with some green showing through. From the right side,you see mostly blue, with some green showing through.

    This is the iPad 3.
     
  16. thelookingglass macrumors 68000

    Joined:
    Apr 27, 2005
    #16
    Excellent explanation, thanks.

    If what you say is true about the color treatment, then no one should settle for a blotchy screen. I have slight pink on the upper half (only noticeable in certain conditions) and slight green in the bottom corners. Seems like the coating was applied unevenly, according to your explanation
     
  17. MrXiro macrumors 68040

    MrXiro

    Joined:
    Nov 2, 2007
    Location:
    Los Angeles
    #17
    My screen seems to have a pink tint at an angle on dark and black images. It's not too bothersome,but it IS slightly,is this normal? Or should I get my iPad exchanged?

    It's very much like in nikos video

    http://www.youtube.com/watch?v=9wP6vj2dxv8&feature=youtube_gdata_player

    I also get a shift like I'm looking at a TFT monitor when I move around and do shifts in angles. Like the screen doesn't look as good when I'm. It directly straight in front of it, but that is only at lower brightness levels.
     
  18. superdudeo macrumors regular

    Joined:
    Dec 7, 2010
    #18
    If you're not happy, return it. Why should you be Apples guinea pig? If they want to charge premium prices it damn well better be perfect.
     
  19. ZipZap macrumors 601

    Joined:
    Dec 14, 2007
    #19
    I truely believe that many of these issues are due to a lack of understanding of these new displays.

    That guy in the video said "Its hard to see if there's something on the screen"?????

    Of course it is. Do you really think 6 ipads in a row could be bad?

    Can someone post a video of an ipad 3 that does not have these issues ?
     
  20. MrXiro, Apr 12, 2012
    Last edited: Apr 12, 2012

    MrXiro macrumors 68040

    MrXiro

    Joined:
    Nov 2, 2007
    Location:
    Los Angeles
    #20
    I second this... this might just be all of them... it's pretty extreme to get to the "pink" view"

    I just check my old iPad 2, it has the same pink issue in extreme conditions. It's a backlight thing that effects all ipads like mcdj said. I am 2 for 2 on it... Non-issue.
     
  21. breezyf808, Apr 13, 2012
    Last edited: Apr 14, 2012

    breezyf808 macrumors regular

    Joined:
    Mar 12, 2012
    #21
    I bought the new iPad from release day and had no color tint what so ever. It was the same brightness as my 4s. I dropped it a week later and apple replaced it after. I read stories like this and hope i don't have this issue. This morning just got the replacement and restored backup and now I see the pink tint on this screen.
    I compared this web site with my 4s and it seems darker (ipad) and at the same brightness (max) the 4s has the bright, clear, superwhitw-blue-ish screen while the iPad has a darker tint (like when u change the color temp setting of a t.v. From sports to movie, if u know what u mean) alls well tho, I gotta live with it I guess
     

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