Hi all, Ive noticed whenever Im on a black screen or watching a letterboxed film that my 27 Retina iMac has some backlight bleed at the top/right of screen. Ive included a couple of photos below - one taken with the screen at full brightness and the other at about half brightness. Ive had a look online and it seems Im not the only one with this problem as many others have come across the very same issue (to varying degrees) on their machines. From what I can gather it seems that most, if not all, Retina iMacs have some amount of backlight bleed as its symptomatic of LCD technology. Regardless, its very distracting whenever youre watching a wider than 16:9 film or playing any games that have a lot of dark scenes. Heck, youre even drawn to it when the machine is booting up and its just downright annoying to see such a beautiful 5K screen tarnished by this ugly anomaly. Considering Ive payed top dollar for a full spec unit its very disappointing to say the least. I spoke to the reseller that I bought mine from and they said their service department is happy to order in a new screen and swap it out. This is something that Im considering doing but I thought Id first get some opinions on the matter here. Do you think the bleed is so bad that it warrants a changeover? To those of you with 5k iMacs how bad is the backlight bleed on your machine? Im a little hesitant about going through with it as Ill probably end up with a replacement screen with worse bleed than what I originally had! The reseller said that Apple quality control is very good and that Id receive a perfect screen but unfortunately Im *very* dubious of this claim. Also is there any chance that when the repair agent puts the machine back together after doing the job that it could end up getting dust, and who knows what else, trapped between the screen and the front glass? If this were to happen it could end up looking worse than the original bleed issue! I suppose that opening up an otherwise perfectly good iMac to the elements can't ever be a good thing... has anyone here had any bad experiences with sloppy repair jobs? Look forward to hearing back with any opinions on what I should do. Thanks in advance!