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Personally I've not had need of a calibrator myself (my screens look good to me, and I don't work in a field which requires any level of display accuracy), so I'm afraid I can't provide any recommendations that you couldn't pull off the average review site. I can start you off with a web search, I suppose.

Regarding the uneven brightness, no, I don't believe any amount of calibration will fix that. It relates to the backlight that lives behind the actual LCD display. Some say you can improve matters by slightly squeezing the darker areas (forcing the LCD into closer proximity to the light - note "slightly", if you suspect you'll crush it, don't even try!), and others find that the effect is much less noticeable if they simply turn their overall display brightness up higher. In some cases, you'll find that simply tilting the screen on a different angle to your eyes is enough to make it appear even.

I'm afraid the only other fix is... a new screen, which is once again subject to the roulette of part availability. Odds are good that you'd get another one which looks exactly the same as the one you've got.

I'm afraid i won' get a screen replacement as I have already had 3 and as I mentioned earlier Apple claims it's within specifications.
Do the pictures look similar too you, or does one appear to be darker?
 
Truth be told, I don't think Apple has much of a leg to stand on in terms of the amount of repairs - I'm not aware of any law that says they only owe you so many!

In fact, you're about at the stage where they tend to start replacing systems instead of repairing them further. It wouldn't surprise me if you could bug them into handing you a different model. It may be worth asking to hear a second opinion directly from someone in a different department, perhaps.

Or it may not be. In any case, complaining here helps to warn others about what Apple considers "acceptable quality", but it doesn't really help your immediate cause.

See, at this point there's two ways they can settle this - one is to tell you that you're wrong and the screen looks great. The other is to admit that they've consistantly been providing you with crummy displays, because that's all that they've got available for that model. Which answer do you think they want to settle on? Which answer do you think is correct?

I can indeed see the effect you're talking about. My quote box in the first screenshot is much brighter than in your second. And that's not just going by eye, either - colour picker in Paint Shop Pro shows the RGB values drop from ~150 to ~100 (about a 33% difference, 255 being pure white).

For comparison, photos taken of the same box through my own screen (an HP2009f) give ~180 near the top and ~170 near the bottom (5.5% difference). The boxes should be rendered at a solid 238, with no gradient.

... though I do suspect the top corners of my screen are a little darker than the rest of it. Not enough to worry me, certainly nothing as obvious as with your display.
 
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Truth be told, I don't think Apple has much of a leg to stand on in terms of the amount of repairs - I'm not aware of any law that says they only owe you so many!

In fact, you're about at the stage where they tend to start replacing systems instead of repairing them further. It wouldn't surprise me if you could bug them into handing you a different model. It may be worth asking to hear a second opinion directly from someone in a different department, perhaps.

Or it may not be. In any case, complaining here helps to warn others about what Apple considers "acceptable quality", but it doesn't really help your immediate cause.

See, at this point there's two ways they can settle this - one is to tell you that you're wrong and the screen looks great. The other is to admit that they've consistantly been providing you with crummy displays, because that's all that they've got available for that model. Which answer do you think they want to settle on? Which answer do you think is correct?

I can indeed see the effect you're talking about. My quote box in the first screenshot is much brighter than in your second. And that's not just going by eye, either - colour picker in Paint Shop Pro shows the RGB values drop from ~150 to ~100 (about a 33% difference, 255 being pure white).

For comparison, photos taken of the same box through my own screen (an HP2009f) give ~180 near the top and ~170 near the bottom (5.5% difference). The boxes should be rendered at a solid 238, with no gradient.

... though I do suspect the top corners of my screen are a little darker than the rest of it. Not enough to worry me, certainly nothing as obvious as with your display.

I wasn't talking about the quote box but that yellowish bar right above it but I agree with you but in my country there is no genius bar , there are third party authorized service centers and one toll free number for apple care. You need to co ordinate with both of em which becomes a pain.
Moreover these third party service centers are stupid people and don't really understand anything. They didn't even know if I had a retina screen or not even after looking at it, they asked me if it was retina or not.

So getting any kind of service from here is hopeless.
they have already replaced my screen thrice and all the three times it was a A020 from WEEK 4 2013.
So that clearly says and as the people at the service center told me, they get whatever displays are there in their warehouse and I'm sure all of them are from this lot.
Even If I manage to get another screen replacement it will be from the same lot as that's what they only have here.

That leaves me with two options:

1) Option one is selling my mac at a loss of 250$ and being without a computer until i or someone travels to the states just to purchase the same retina model again. Except for the screen the computer is brilliant so I'm definitely buying a mac again

2) Option two is keep using this and probably purchase the extended warranty which is for 250$ and get it replaced when i travel to a country probably the states only or if not a country with a genius bar. In the coming 3 years i'll definitely travel once to a country with a genius bar. Most probably the UK or the States. But my concern here is will they accept it and will they replace it?
Or will they act like the authorized service centers just like here. How shall I pitch them my problem?

I have never been to a genius bar so I don't know how they are but I have heard a lot of good stories from people which gives me hope.

So what do you think Option 1 or Option 2?
 
Personally, I'd try to get AppleCare to replace the unit, without the involvement of a service center. Whether this is an option may depend on the courier services in your country, however.

Another option would be to connect an external display to the unit. Sure, you'd lose portability, and there's next to no point in paying for retina's DPI if you're not going to look at it, but if it's just for your work that may not be so bad? Certain models of iMac can be used as displays for Macbooks, if you happen to have one of those sitting around gathering dust.

AppleCare Protection Plans should provide world-wide coverage, but you could always check with the reps you've been dealing with to be sure, I suppose. Checking in at an official Apple store in person is certainly worth a shot. They tend not to like replacing units they didn't sell, but I reckon there's a good chance you could get them to take another shot at sorting out the screen on your current system, and there's a good chance they'd have a different stock of parts with which to do it.

In the meantime, consider looking further into calibration anyway. You might end up liking the results, and a tool for the job might even be of further use in the future.
 
Personally, I'd try to get AppleCare to replace the unit, without the involvement of a service center. Whether this is an option may depend on the courier services in your country, however.

Another option would be to connect an external display to the unit. Sure, you'd lose portability, and there's next to no point in paying for retina's DPI if you're not going to look at it, but if it's just for your work that may not be so bad? Certain models of iMac can be used as displays for Macbooks, if you happen to have one of those sitting around gathering dust.

AppleCare Protection Plans should provide world-wide coverage, but you could always check with the reps you've been dealing with to be sure, I suppose. Checking in at an official Apple store in person is certainly worth a shot. They tend not to like replacing units they didn't sell, but I reckon there's a good chance you could get them to take another shot at sorting out the screen on your current system, and there's a good chance they'd have a different stock of parts with which to do it.

In the meantime, consider looking further into calibration anyway. You might end up liking the results, and a tool for the job might even be of further use in the future.

thanks a lot :D really appreciate it
 
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