Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > Desktops > iMac

Reply
 
Thread Tools Search this Thread Display Modes
Old Jan 22, 2013, 02:32 AM   #1
Brostep710
macrumors newbie
 
Join Date: Jan 2013
Backlight bleed

I've seen a bunch of post about blacklighht bleed. I don't know anything about it though but is the backlight bleed on my imac bad? Should I return it?

Thanks
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	375
Size:	1.28 MB
ID:	391822  
Brostep710 is offline   0 Reply With Quote
Old Jan 22, 2013, 03:59 AM   #2
Michaelgtrusa
macrumors 601
 
Michaelgtrusa's Avatar
 
Join Date: Oct 2008
Location: Everywhere And Nowhere
That looks bad. Return it?
__________________
iMACAll life is an experiment. The more experiments you make the better.
TWITTER TUMBLR
Michaelgtrusa is offline   0 Reply With Quote
Old Jan 22, 2013, 04:02 AM   #3
WilliamG
macrumors 601
 
Join Date: Mar 2008
Location: Seattle
The top left and top right look normal to me (IPS viewing angle deficiencies). The areas in the lower central region, though, don't look good.
__________________
iMac, MacBook Air, Mac mini, iPad, iPhone, 55-11
www.bighugenerd.com
WilliamG is offline   1 Reply With Quote
Old Jan 22, 2013, 07:24 AM   #4
Chuckstones
macrumors regular
 
Join Date: Oct 2012
It's strange isn't it. That all the iMacs with backlight bleed have it at the bottom only!
My 2 returned ones had it only at the bottom and my current one has it slightly!
Seems to fall in line with the yellowing issue being towards the bottom also!!
Chuckstones is offline   0 Reply With Quote
Old Jan 22, 2013, 03:02 PM   #5
Cunick
macrumors newbie
 
Join Date: Jan 2013
Hi,

I've just bought my first iMac and was wanting to check with the forum if I have backlight bleed and if so if the amount is 'normal'.

The top two images were taken from 2 feet away at 100% brightness while the second two are with 50% brightness.

I'm obviously a complete newbie ti macs so not really sure what to expect. With 2000 missing from my bank account I'd expect perfection but after reading the forum, I doubt that is possible.

Thanks
Attached Thumbnails
Click image for larger version

Name:	22012013578.JPG
Views:	39
Size:	1.59 MB
ID:	391965   Click image for larger version

Name:	22012013579.JPG
Views:	36
Size:	1.34 MB
ID:	391966   Click image for larger version

Name:	22012013580.JPG
Views:	28
Size:	1.32 MB
ID:	391967  

Click image for larger version

Name:	22012013581.JPG
Views:	28
Size:	1.41 MB
ID:	391968  
Cunick is offline   0 Reply With Quote
Old Jan 22, 2013, 03:29 PM   #6
WilliamG
macrumors 601
 
Join Date: Mar 2008
Location: Seattle
Cunick that looks excellent to me. If you move to the left-of-central of the iMac, the top left corner "brightness" will disappear, and the same with the right side if you move to the right of center. That is NOT bleed, - just the IPS glow. The slight area at the bottom at 100% brightness is just that - so slight, and let's face it, not seen under normal usage.

I wish Apple would make a support document about the IPS panels and their typicalities.
__________________
iMac, MacBook Air, Mac mini, iPad, iPhone, 55-11
www.bighugenerd.com
WilliamG is offline   0 Reply With Quote
Old Jan 22, 2013, 03:49 PM   #7
Cunick
macrumors newbie
 
Join Date: Jan 2013
Thanks WilliamG.

I thought it was that but wanted to make sure before my 14 days to return it were up.

Now to get immersed into my iMac
Cunick is offline   0 Reply With Quote
Old Jan 22, 2013, 04:05 PM   #8
torana355
macrumors 65816
 
Join Date: Dec 2009
Location: Sydney, Australia
Quote:
Originally Posted by Brostep710 View Post
I've seen a bunch of post about blacklighht bleed. I don't know anything about it though but is the backlight bleed on my imac bad? Should I return it?

Thanks
Most of that is normal as the ips panels used in iMacs dont have a A-TW polarizer. These are only found in very high end standalone panels. You do have slight bleed at the bottom but it looks well within tolerance.
__________________
2012 27" iMac with 680mx | 2011 13" MBA 128gb | iPhone 4 32gb | Nexus 7 16gb | Nexus 4 on Carbon and Trinity.
torana355 is offline   0 Reply With Quote
Old Jan 22, 2013, 04:06 PM   #9
cmjars
macrumors member
 
Join Date: Jan 2013
Quote:
Originally Posted by Cunick View Post
Thanks WilliamG.

I thought it was that but wanted to make sure before my 14 days to return it were up.

Now to get immersed into my iMac
I would be concerned about the yellowing on your screen. I replaced mine that looked like yours.
cmjars is offline   0 Reply With Quote
Old Jan 22, 2013, 05:14 PM   #10
Mac32
macrumors 6502a
 
Join Date: Nov 2010
I'm no expert, but that last screen looks pretty good to me. As others have said, there's viewing angles issues with these IPS screens, and when tilting your head the slightly warmer tint in the bottom of the screen goes away. I also have some slight backlight bleed in the corners when cranking up the brightness, but it's mostly a viewing angle issue. I did not get image rentention, scratches, dead pixels etc. I would not risk getting a new unit with one of these issues, just because you want the illusive "perfect" iMac screen.
Of course, some people here have serious issues with their iMacs which should be addressed. I'm just saying some here obsess over minute details, and that "perfect" screen is pretty hard to come by, if possible at all.

Maybe if people that claim they have an iMac 27'' with 0% backlight bleeding could post a picture of their screen at 100% brightness? I doubt we'll see it...

Last edited by Mac32; Jan 22, 2013 at 06:00 PM.
Mac32 is offline   0 Reply With Quote
Old Jan 22, 2013, 05:27 PM   #11
Chuckstones
macrumors regular
 
Join Date: Oct 2012
Quote:
Originally Posted by cmjars View Post
I would be concerned about the yellowing on your screen. I replaced mine that looked like yours.
I don't see any yellowing at all!!

In my opinion Cunick has a damn good screen!
Chuckstones is offline   0 Reply With Quote
Old Jan 22, 2013, 05:37 PM   #12
Tri-stan
macrumors 6502
 
Join Date: Oct 2012
All I see is a colour cast from right to left of the screen but that might just be the camera.
__________________
Haswell or Broardwell MBP? iGPU!
Tri-stan is offline   0 Reply With Quote
Old Jan 22, 2013, 05:44 PM   #13
Brostep710
Thread Starter
macrumors newbie
 
Join Date: Jan 2013
So I should return it?
Brostep710 is offline   0 Reply With Quote
Old Jan 22, 2013, 05:51 PM   #14
Tri-stan
macrumors 6502
 
Join Date: Oct 2012
Quote:
Originally Posted by Brostep710 View Post
So I should return it?
Do you see that the left side of the screen is slightly yellow and the other is bluish green. If not I would say you got a great screen with good blacks and acceptable back light bleed. Ips glow is always going to be the worst but nothing can be done about that.

Ow and btw I was refering to cranks image. So you should do one like that to assess your screen properly. It will also give you a good reference if you choose to exchange.
__________________
Haswell or Broardwell MBP? iGPU!
Tri-stan is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Desktops > iMac

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Imac 27" backlight bleed Aagaard2703 iMac 15 Oct 26, 2013 07:55 AM
iPhone 5 Backlight bleed simercool iPhone 9 Oct 26, 2012 04:27 AM
iPad 3 Backlight Bleed bob616 iPad 0 Oct 20, 2012 07:38 AM
iPhone 5 backlight bleed jumbopain iPhone 6 Sep 27, 2012 05:19 PM
WEIRD backlight bleed MarkTheWalrus MacBook Air 12 Sep 13, 2012 05:54 AM

Forum Jump

All times are GMT -5. The time now is 01:50 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC