yatil: Standard contrast: 2.37:1
yatil: Color Shift only: 2.47:1
yatil: Hi-Con mode: 1.61:1
yatil: Desaturate: 1.9:1
yatil: Hi-Con + Color Shift: 1.91:1
yatil: Invert: 3.75:1
yatil: Invert + Color Shift: 3.37:1