Gamma Control lets you quickly adjust the gamma correction curve of your Mac’s display. Use it to calibrate the screen for new ambiant conditions without having to go to the ColorSync Calibration Assistant in the System Preferences.

Gamma Control can also be used to simulate the effect of various screen calibrations on pictures and videos. You can save your gamma settings in documents and reopen them as needed to reproduce various conditions over and over.

You can easily toggle on or off the application of Gamma Control’s settings to the screen through a hotkey or by clicking on its dock icon.

License: Upgrading from version 4 or earlier requires purchase of a new license.

Requirements:
OS X 10.6.6+
64-bit Intel

Also available is:
Version 3.0.3 for OS X 10.2.8+