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27", 21.5" iMac Owners, test your screen for yellow tint issue here
- Thread starter tapplox
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got a week 7 27" i5 from Amazon yesterday, so being a lemming, I got out my Sony A900 and shot RAW (blurred to reduce moire). the picture on the left is purposely over-saturated, the one on the right is closer to how I actually see things (OK, less blurry than that). If I looked at gray fields all day I might notice it, but even editing pictures (I do a lot of photography), I probably wouldn't. I sure didn't when test editing on it yesterday using Lightroom and Lightzone.
after taking shots of the i5 iMac and subsequently running like a moron around the house taking pictures of all the LCD monitors we have, I've come to one conclusion: LCD's as a rule still suck and are not uniform.
My Dell blooms, my wife's 20" iMac is way darker on the bottom half and has uneven spots, even my somewhat pricey from several years ago NEC has dark vertical stripes. They all have issues. Whoever said that this huge iMac panel has simply made the failings of LCD technology readily apparent is right on. ("I miss CRT's..."
I'll have to check with my wife's friend at NEC's monitor division to see what the state of top end panels is now and what they think of all this stuff with Apple. I'm sure she has an opinion.
I'm coming to realize that all panels have some issues when pixel peeping gray rectangles (maybe the megabuck NEC, Eizo etc. that are probably hand inspected are exceptions), so one has to ask oneself, at one point does any of this really matter??
For the moment, I'll keep it. Everything else works and there are no dead pixels etc. and I've definitely seen much worse examples of color issues than mine. Not sure how Amazon would want to deal with the return anyway, though being Amazon, I'm sure they'd accommodate me.
Buddy, your screen is one of the best I have seen on this forum! If my second replacement has a screen like that, I will hold on to it for dear life! But really, you should see some of the screens posted, they literally look like piss has collected on the bottom half of the screen!
Yes. Look up on this page. Post 1581
Here is another (crooked shot) but I upped the saturation.
I just called Apple's Business line, and the guy is doing some research for me since I have an i7.
The apple store apparently will not replace the panels more than they are giving out new machines to solve the issue.
My other Apple authorized retailer sounds retarded because he wants to spend an entire day doing "Diagnostic tests" to make sure there really is a problem, and only then he will order it.
Gah.
You are doing this wrong, stop posting pictures of screenshots.
They will all look the same. (Meaning you will never see problems from a screenshot even if your screen is full of dead pixels and is orange. )
You have to PHOTOGRAPH your iMac with a camera.
Heh, yeah, there are definitely some atrocious panels out there compared to mine, not trying to make light of those who have them. But what made me concerned was I asked my wife to spend some quality time with me this morning over coffee and look at gray rectangles (she's in marketing communications, so has an eye trained for color)... she immediately pointed out the greenish-yellow areas and slight pinkish bloom off-center. I told her quality time was over and to go away.
Photograph the Tinge test straight on, at about your viewing position.
Upload the picture, and you can adjust the saturation in photoshop and tinker around with curves just to see how extreme the problem is if at all.
Your Screen is faulty aswell. I amplified the colors to show you the uneven distribution and the yellow tinge on the right half.
Attachments
Yes, if it bothers you.
There is no evidence the yellow tinge changes at all, so I strongly doubt it will get worse, or better for that matter.
The only way this is seen is when the colours are extremely boosted, white or anything else is just not seen. But for working on photographs this will greatly effect the work.
I'm very tempted to return it for money back and just wait until they get everything straightened out. I really don't want to keep doing this and I will just keep using my 2008 24" imac.
I'm very tempted to return it for money back and just wait until they get everything straightened out. I really don't want to keep doing this and I will just keep using my 2008 24" imac.
Hmmm. Could you show us a picture of a screen that has been amped up like this which doesn't look funky?Your Screen is faulty aswell. I amplified the colors to show you the uneven distribution and the yellow tinge on the right half.
Maybe if someone who claims to have a perfect imac could post a photo?
A good screen would look evenly funky in all 4 corners. And not yellow in the right corner and blue in the top left.
Screenshots aren't going to reveal the problem (which is also why your two pictures look exactly the same despite the different lighting conditions). You need to take an actual photograph of your screen for us to see the problem.
I agree.... boosting the saturation to riduculous, even stupid, levels proves nothing...
Do that with any monitor or any LCD TV and I bet you see variation... stupid "trick" if you ask me...
Posts #1613 and 1621 are photos from my camera of my 27" screen. Put in Capture nx2 and colours boosted to 100%
Someone had told me to boost the colours (I forget what post) on my "photo" of my screen this is why I had done it. If you click on those photos you will see they are jpegs, from my camera posts 1613 and 1621. I'm just trying to find out if I have a faulty imac.
Why I look at it just to work on I don't see any yellowing, its just when you start boosting all the colours.
Someone had told me to boost the colours (I forget what post) on my "photo" of my screen this is why I had done it. If you click on those photos you will see they are jpegs, from my camera posts 1613 and 1621. I'm just trying to find out if I have a faulty imac.
Why I look at it just to work on I don't see any yellowing, its just when you start boosting all the colours.
