Why is there a yellow cast on my screen?

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Level 1

0 points

Why is there a yellow cast on my screen?

Color/files viewed from any angle besides a full frontal 90 degrees appear to have a predominantly yellow cast. UltraMarine blues appear cyan and blue greys appear yellow grey when view point is shifted from 90 degrees perpendicular to the screen.
Another imac I purchased a few months back without the glass front over the LCD screen does not have this problem.
Is anyone else having the same problem? Any explanations/solutions?

imac, Mac OS X (10.4.10)

Posted on Nov 16, 2007 3:19 AM

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Answer 1

mrtotes

Level 6

11,836 points

Nov 16, 2007 4:37 AM in response to ruhi

Hello and Welcome to Apple Discussions.

It would be worth trying to re-calibrate your display using ColorSync.

 menu > System Preferences... > Displays > Color > Calibrate...

cheers

mrtotes

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Answer 2

lakeshore

Level 2

306 points

Nov 16, 2007 5:39 AM in response to ruhi

You don't mention which machine, 20" or 24", you have. The 20" aluminum iMacs have a restricted viewing angle, compared to the 24" iMacs, and color shifts are quite pronounced on them as you move your viewing angle away from dead center.

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Answer 3

ruhi Author

Level 1

0 points

Nov 20, 2007 5:28 AM in response to lakeshore

This is not a problem with the caliberation. Mine is a 20" aluminium mac. The previous one I had purchased was the older white one, but a 24" screen without a glass over the screen. This news is very disappointing, why would they make such a horrid limitation?
I've done some research and all the aluminium 24" screens have this problem. Would you know why this occurs?

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Answer 4

lakeshore

Level 2

306 points

Nov 20, 2007 5:58 AM in response to ruhi

I think it boils down to economics. Apple has decided that the target customer for the iMac is not very demanding when it comes to accurate color representation, but is instead looking for brightness and "pop" when watching movies. Thus, Apple went with a less expensive screen to lower the price of the aluminum iMacs, and made the screen glossy to create the pop that really attracts customers when it's sitting on a store shelf. For those who demand more accurate color representation, Apple offers the MacPro/Cinema Display configuration.

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Answer 5

The Looby

Level 4

1,285 points

Nov 20, 2007 11:10 AM in response to lakeshore

lakeshore wrote:

I think it boils down to economics. Apple has decided that the
target customer for the iMac is not very demanding when it comes
to accurate color representation, but is instead looking for
brightness and "pop" when watching movies.

The 20" switch from 8-bit S-IPS to 6-bit TN panels was clearly an
economic decision, but I don't think that's the case with 24" ALU.
The new 24" display uses basically the same S-IPS TFT-matrix as
the previous generation 24" -- differing only in the P/N suffix:

24" white: LG.Philips LM240WU2-SLA1

24" ALU: LG.Philips LM240WU2-SLB1

It's a very high-quality LCD matrix, with excellent viewing angles -- but the
+panel assembly+ has problems with backlight brightness/color uniformity.

_Pure speculation_: I suspect they had to squish the backlight components
(i.e., lamps, diffuser, inverter) into a thinner package to satisfy a dictate
from ...uh, 'someone' in management. Someone with a fetish for "slim"...

...as well as fetishes for glass, aluminum, and visual "pop,"

Looby

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