This pop-up menu is available only in the Playback Control tab (not the RT pop-up menu)
on older systems with graphics cards that don’t support gamma correction. If your
computer’s graphics card does not support gamma correction, you have two options:
Â Accurate: High-quality gamma correction. This option is the most accurate but also
requires the most processing power.
Â Approximate: Lower-quality gamma correction. This option leaves more processing
power available for real-time effects but results in less-accurate color and
For more information, see “
Choosing Real-Time Playback Gamma Correction Options
on page 669.