Color issues with this iMac retina 5K monitor
I work everyday with a client and we have files that on my iMac screen, I cannot see extremely pale tints. He often tells me when we run into this issue that I should get this taken care of. I use the bait in display calibration and sometimes calibrate it 2 or 3 times in a row.
For example, we have an illustrator file with box background behind text that is 2c, 2m, 0y 0k and I cannot see the this extreme tint against the white background. Yet he can on his monitor. He's running the latest MacPro desktop beast with a LG 31MU97 31-inch (4096 x 2160) monitor.