The OS X El Capitan does bring a lot of new features. But it turns out some of the old features begin to be eliminated. Call it simpler, Disk Utility or Secure Empty Trash mode officially missing. Then reportedly, the Professional Screen Calibration Mode also be removed. Is it true? Relax, this feature is still there. Just a little hidden away.
Here is a short tutorial How to Access a Professional Screen Calibration Mode in OS X El Capitan:
1. Open System Preferences. Through the new menu Apple logo, Spotlight or Application folder.
2. Go to the settings Display > Color.
3. On the right, there is Calibrate button. Before pressing the button, simply press and hold down the Option key on the keyboard then click Calibrate.
4. Now please press the Checklist Expert Mode and get ready to perform the calibration screen!
For those of you who do not know, the calibration screen is very important for the users who perform image editing or user who associated with the printing process. This feature seems more appropriate for professional or expert user who already understand the truth about the color profile of the monitor used and its relationship with the used printing machinery.
This mode can be used on Mac computers that quite old age or with the conditions of LCD began to turn yellow. Do not need to rush to replace the computer anyway, just play Expert Mode settings in this feature.
Source : osxdaily.com, makemac.com