How to set display gamma on High Sierra 10.13?
Anyone know how to set the display gamma on High Sierra (I have 10.13.1) to 2.2? I have a 27 inch iMac. Having trouble calibrating the display via a hardware device called a Spyder.
iMac, macOS High Sierra (10.13.1), late 2012 27 inch iMac, 24 GB