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Old Jan 1, 2013, 09:25 PM   #1
kidwei
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Late-2012 27" iMac backlight bleeding

Copied from a post I made in another thread. I think I have one significant instance of backlight bleed on my iMac screen, which is pretty distracting only in certain situations. I'm wary of returning for the risk of getting an even worse panel.

here's my imac's screen at half brightness, though it looks pretty similar at full brightness.. the light bleed from the corners is pretty acceptable to my eyes.. and i think that might actually not be backlight bleeding bc it goes away at certain angles. what really bothers me is the bleed at the left side of the bottom edge, which diffuses up a light cloud about 4-5 inches upwards. The next pic is around half brightness.



this creates some ugliness in dark scenes.. mainly for movies and gaming.. in normal "desktop" use, i rarely notice it.. again, in the next picture, ignore the corner brightness, i don't find that to be an issue at most angles.. This pic I believe is at full brightness.



Most of the time I'm satisfied with the screen. I don't do too much gaming on my iMac.. and I don't watch any movies other than YouTube on it... so.. to me this bothers me more because I paid so much for this computer.

I feel like I've also seen much worse examples of bleed on this forum and don't want to make too big an issue out of it.. thoughts on my panel?
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Old Jan 1, 2013, 09:27 PM   #2
Gelite55
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It's normal for some backlight bleed. But that seems excessive. I'd get it exchanged.
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Old Jan 1, 2013, 09:38 PM   #3
kidwei
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Originally Posted by Gelite55 View Post
It's normal for some backlight bleed. But that seems excessive. I'd get it exchanged.
which area seems excessive? it's really the left side of the bottom edge that bothers me most.. do the corners look worse than should be expected?

it's all a bit less noticeable at half brightness..
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Old Jan 1, 2013, 09:46 PM   #4
tom vilsack
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Why are you even considering debating this mess of a screen? That bottom left (2-3 inches in) is horrid! Did you not pay $$$$ for this...expect darn near perfection.

Go call apple asap and get a new one shipping now.
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Old Jan 1, 2013, 09:55 PM   #5
kidwei
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Originally Posted by tom vilsack View Post
Why are you even considering debating this mess of a screen? That bottom left (2-3 inches in) is horrid! Did you not pay $$$$ for this...expect darn near perfection.

Go call apple asap and get a new one shipping now.
Here it is at half-brightness.. the bottom left is still noticeable but less so... not my idea of perfection though..



Do other owners of the 27" have better panels than this? It's hard to tell, since most people only post with issues rather than when they have good panels. Sigh..

----------

Okay, this pic is probably more representative of the screen at half-brightness.. again, it's not catastrophically bad but you can still see the glow at the bottom left.. :T

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Old Jan 1, 2013, 09:59 PM   #6
crows
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When I get my iMac if it has that much backlight bleed I will return it thats just too much...
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Old Jan 1, 2013, 10:01 PM   #7
bobright
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Originally Posted by kidwei View Post
Here it is at half-brightness.. the bottom left is still noticeable but less so... not my idea of perfection though..

Image

Do other owners of the 27" have better panels than this? It's hard to tell, since most people only post with issues rather than when they have good panels. Sigh..

----------

Okay, this pic is probably more representative of the screen at half-brightness.. again, it's not catastrophically bad but you can still see the glow at the bottom left.. :T

Image
I have a launch 27" got mine with the first wave of people it is pretty much flawless. Deep rich blacks and no bleed at all. I was scared as hell mine might have it like most people as I've dealt with it on previous iPads thankfully its fine. I would take it back of I were you.
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Old Jan 1, 2013, 10:03 PM   #8
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I have a launch 27" got mine with the first wave of people it is pretty much flawless. Deep rich blacks and no bleed at all. I was scared as hell mine might have it like most people as I've dealt with it on previous iPads thankfully its fine. I would take it back of I were you.
Thanks. Good to know. I haven't seen too many threads on backlight bleeding here so maybe I just got a lemon... I was really trying to ignore it but it seems out of the norm. Will ring apple. Thanks for the help everyone.
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Old Jan 1, 2013, 10:10 PM   #9
bobright
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Thanks. Good to know. I haven't seen too many threads on backlight bleeding here so maybe I just got a lemon... I was really trying to ignore it but it seems out of the norm. Will ring apple. Thanks for the help everyone.
Yup, displays have overall been good you see the random thread here and there about bad ones but most have had flawless machines. Good luck kid, I know how awful it is to get a bad screen and have to return and return hopefully your next is mint so you don't have to deal with that crap.
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Old Jan 1, 2013, 11:45 PM   #10
WilliamG
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Thanks. Good to know. I haven't seen too many threads on backlight bleeding here so maybe I just got a lemon... I was really trying to ignore it but it seems out of the norm. Will ring apple. Thanks for the help everyone.
People have different tolerances. Personally, I don't believe there's any such thing as deep, rich blacks on these new iMacs, or any iMacs. IPS panels simply don't have deep, rich blacks. They have deep, rich colors (black/grey excluded), but that's about it.
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Old Jan 1, 2013, 09:58 PM   #11
bobright
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Originally Posted by kidwei View Post
Copied from a post I made in another thread. I think I have one significant instance of backlight bleed on my iMac screen, which is pretty distracting only in certain situations. I'm wary of returning for the risk of getting an even worse panel.

here's my imac's screen at half brightness, though it looks pretty similar at full brightness.. the light bleed from the corners is pretty acceptable to my eyes.. and i think that might actually not be backlight bleeding bc it goes away at certain angles. what really bothers me is the bleed at the left side of the bottom edge, which diffuses up a light cloud about 4-5 inches upwards. The next pic is around half brightness.

Image

this creates some ugliness in dark scenes.. mainly for movies and gaming.. in normal "desktop" use, i rarely notice it.. again, in the next picture, ignore the corner brightness, i don't find that to be an issue at most angles.. This pic I believe is at full brightness.

Image

Most of the time I'm satisfied with the screen. I don't do too much gaming on my iMac.. and I don't watch any movies other than YouTube on it... so.. to me this bothers me more because I paid so much for this computer.

I feel like I've also seen much worse examples of bleed on this forum and don't want to make too big an issue out of it.. thoughts on my panel?
That's pretty bad man, especially given this was taken with lights on. There should really be no visible lightbleed during the day.
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Old Jan 1, 2013, 10:00 PM   #12
kidwei
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That's pretty bad man, especially given this was taken with lights on. There should really be no visible lightbleed during the day.
*feelsbadman* bobright I know you've said you got a good panel. I'm guessing yours performs a lot better?

I guess I'll be giving apple a call. Thank goodness for the extended return period as I took delivery of my machine on the 17th.
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Old Jan 25, 2013, 02:09 PM   #13
dreez
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Thumbs down

I have that same backlight bleeding lower left-of-center. I'm fine with the corners, but man having it right in the middle sucks during games cutscenes and viewing 2.35:1 videos.

Has anyone exchanged or used AppleCare to fix this yet? Is it worth it?

Quote:
Originally Posted by kidwei View Post
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Old Jan 25, 2013, 03:13 PM   #14
kidwei
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I have that same backlight bleeding lower left-of-center. I'm fine with the corners, but man having it right in the middle sucks during games cutscenes and viewing 2.35:1 videos.

Has anyone exchanged or used AppleCare to fix this yet? Is it worth it?
I ended up doing two exchanges before getting one where the backlight bleeding was acceptable. My first replacement was far worse. And my second replacement is quite a bit better, though it still has some minor bleed. It's far less noticeable and doesn't grab my eye like the first two did.

If you're thinking about a replacement, I'd encourage you to do it quickly. You can get a replacement for a new iMac within the first 14 days. After that, you're gonna get into repairs, which is far less pleasant, and would involve taking apart your iMac.
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Old Jan 25, 2013, 03:22 PM   #15
Richard Peters
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My 27 just arrived and it's lovely. I must admit the screen appear to have streaks on it if I put a solid grey colour as the background, but they are not visible under normal use. Coming from my 10 year old Dell, it's a huge improvement.
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Old Jan 29, 2013, 10:21 PM   #16
kidwei
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My 27 just arrived and it's lovely. I must admit the screen appear to have streaks on it if I put a solid grey colour as the background, but they are not visible under normal use. Coming from my 10 year old Dell, it's a huge improvement.
I have those "streaks".. it looks just very very slightly patchy.. still, it's much better than backlight bleeding and yellowing on the screen. Quite happy with the iMac!
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Old Jan 29, 2013, 10:39 PM   #17
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Originally Posted by kidwei View Post
I have those "streaks".. it looks just very very slightly patchy.. still, it's much better than backlight bleeding and yellowing on the screen. Quite happy with the iMac!
Should have my 27" in about a week after a 2 month wait, hope it's 100% okay!
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Old Jan 30, 2013, 12:51 AM   #18
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Originally Posted by kidwei View Post
I have those "streaks".. it looks just very very slightly patchy.. still, it's much better than backlight bleeding and yellowing on the screen. Quite happy with the iMac!
Yep, to get picky, my 2009 had the streaks, and my 2012 does, too. Only really visible on a grey screen if you're looking for them.
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Old Jan 30, 2013, 01:21 PM   #19
Richard Peters
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I have those "streaks".. it looks just very very slightly patchy.. still, it's much better than backlight bleeding and yellowing on the screen. Quite happy with the iMac!
Agreed.

I actually notice it less and less now as well.
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Old Apr 13, 2013, 04:24 PM   #20
mmroz
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Here's my screen at 50% and 100%

Here's my screen at 50% and 100%, don't mind the window blinds.


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Old Apr 15, 2013, 12:31 AM   #21
Arfdog
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This is mine. You can make it better or worse based solely on angle. It's just the nature of the tech.

The only screen that i've seen that doesn't do this is my Iphone 5. Ipad 3 does it.
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Old Apr 16, 2013, 07:19 AM   #22
nivou
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Same backlite likage issue

Hi,

I got my iMac 27'' (late 2012) BTO last week and I think that I've got the same leakage issue. I've taken a picture with my iPhone 4S, so the problem is worst than it shows. I am really disappointed and Iím thinking of using the DOA 14 days policy. My worries are that the next iMac could have a worst issue or maybe other issue like a dead pixel. Someone, I don't know if I read it here, that change it 3 times...
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Old Apr 16, 2013, 04:35 PM   #23
Arfdog
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Originally Posted by nivou View Post
Hi,

I got my iMac 27'' (late 2012) BTO last week and I think that I've got the same leakage issue. I've taken a picture with my iPhone 4S, so the problem is worst than it shows. I am really disappointed and Iím thinking of using the DOA 14 days policy. My worries are that the next iMac could have a worst issue or maybe other issue like a dead pixel. Someone, I don't know if I read it here, that change it 3 times...
Don't change it, they're all the same. Just return it if you're not satisfied.
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Old Apr 16, 2013, 04:56 PM   #24
WilliamG
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Don't change it, they're all the same. Just return it if you're not satisfied.
+1 on this.
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Old Apr 18, 2013, 06:53 AM   #25
autopoiesis
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Originally Posted by nivou View Post
Hi,

I got my iMac 27'' (late 2012) BTO last week and I think that I've got the same leakage issue. I've taken a picture with my iPhone 4S, so the problem is worst than it shows. I am really disappointed and Iím thinking of using the DOA 14 days policy. My worries are that the next iMac could have a worst issue or maybe other issue like a dead pixel. Someone, I don't know if I read it here, that change it 3 times...
I wouldn't recommend to start this exchange game. My iMac (27'', 2012) has the same bleed "issue". I was very disappointed and asked apple for a new machine. The very good thing was to keep the first machine until the second one arrived. The screen of the second iMac had the same amount of backlight bleeding, and in my eyes it was actually even worse. Moreover, it had a really bad yellow tint. So I send it back and decided to stop this exchange lottery and to stick with my first unit. I'm now very happy with my decision, because I actually barely notice this "bleeding spot" in the every-day-use.

I attached photos of both screens (first iMac and exchange iMac, both 100% brightness) taken with my iPhone camera (which unfortunately exaggerates the bleed issue a bit).
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