1.Non-Linear Human Vision and Gamma 2.2
Human eyes are significantly more sensitive to subtle differences in dark shadows than in bright highlights. If displays encoded brightness linearly (1:1), dark tones would appear harshly banded. A power-law gamma curve (standardized at 2.2 for sRGB and Rec.709) redistributes tonal bits to match human visual perception.
Frequently Asked Questions
Should I use Gamma 2.2 or Gamma 2.4?
Gamma 2.2 is the universal standard for typical office and daylight gaming environments. Gamma 2.4 is designed for dedicated dark home theater rooms.