For those interested, both my old 2012 27" iMac and this new replacement 2012 27" Mac calibrated nigh-on identically. I went back and forth between the calibration, and could barely tell the difference, indicating pretty darn consistent panel temperatures/gamma/color etc between the devices (assuming my two units bought almost 2 months apart are any indication!)
If you want to try my calibration out, feel free. I'm including it with this post. Just put it in your User/ Library -> Colorsync -> Profiles folder and then activate it in Display Preferences. You'll be surprised by the difference. The calibration is for 7 blocks of brightness up from the lowest (and actually, my colorimeter required the same for both the old and new 2012 iMac to get 120cd/m2).
You'll see a massive reduction/elimination of crushed blacks, which is a major issue (in my opinion) with these 27" 2012 iMacs.
Easy way to test for reduction of crushed blacks - look at the rear fan in this image with your default iMac profile and then my calibration.
http://i133.photobucket.com/albums/.../MacRumors/ReferenceImagesRGB_zpsbf645ba5.jpg
*EDIT May 8, 2013*
Finally got an i1Display Pro, and here is the profile:
D65, 120 cdm/2 (seven brightness levels up from "zero")
ICC profile
If you want to try my calibration out, feel free. I'm including it with this post. Just put it in your User/ Library -> Colorsync -> Profiles folder and then activate it in Display Preferences. You'll be surprised by the difference. The calibration is for 7 blocks of brightness up from the lowest (and actually, my colorimeter required the same for both the old and new 2012 iMac to get 120cd/m2).
You'll see a massive reduction/elimination of crushed blacks, which is a major issue (in my opinion) with these 27" 2012 iMacs.
Easy way to test for reduction of crushed blacks - look at the rear fan in this image with your default iMac profile and then my calibration.
http://i133.photobucket.com/albums/.../MacRumors/ReferenceImagesRGB_zpsbf645ba5.jpg
*EDIT May 8, 2013*
Finally got an i1Display Pro, and here is the profile:
D65, 120 cdm/2 (seven brightness levels up from "zero")
ICC profile
Last edited: