Running an iMac Pro currently with a TB connected Apple Cinema Screen. It is not possible to get the two screens to the same colour balance, even with Spyder calibrator, due to different screen technology.
Reading tales of horror about the 5k LG screen sold by Apple, I was wondering how viable would it be to buy the cheapest used iMac 27" Retina 5k from eBay and use it as a 2nd screen?
Would this work and has anyone doing this?
What specs or year, is minimum for 2nd iMac as a screen, that would give good video playback performance and matching colour to the main one?
I am using the iMac Pro, and my second screen is the 27' Apple Thunderbolt Display I used with my former 2013 Mac Pro (tube). This way the OS uses ColorSync and I have no issues. You can get them at a really good price on eBay. It's not 5K, but I don't see a really need for 5K, personally. although folks producing for 5K delivery may need that. May not be what you're looking for, just mentioning an option.