Figure 1a Color Gamuts in the Dark 0 lux
Figure 1b Color Gamuts in 0 to 2,000 lux
Figure 1a below shows the measured Color Gamuts for the four Galaxy S9 Screen Modes along with the new wide DCI-P3 Standard Color Gamut marked by 3 Black circles. The outermost white curve is the limits of human color vision - the horseshoe is the pure spectral colors and the diagonal is the Line of Purples. A given display can only reproduce the colors that lie inside of the triangle formed by its Primary Colors.
Accurate White Point
Four Galaxy S9 Screen Modes
See these Color Accuracy Figures for detailed measurements of each of the Screen Modes. Note that some of the Screen Modes are similar and their Gamuts and White Points overlap in the Figure. The white circle marking the D65 White Point is partially covered by the very accurate White Points for the AMOLED Cinema, Basic, and AMOLED Photo screen modes. The Adaptive Display screen mode has an intentionally Bluish White Point.
The Change in Color Gamut with Ambient Light
The way to improve the display Color Accuracy and performance in Ambient Light is to start with a larger Color Gamut, like the Adaptive Display screen mode, which is shown on the right compared to the Basic screen mode on the left. At 1,000 lux the Adaptive Display screen mode provides a much better match to the sRGB / Rec.709 Color Gamut than the Basic screen mode. So the Adaptive Display screen mode provides more accurate on-screen colors in moderate to high Ambient Lighting than the other calibrated Screen Modes, which are designed and calibrated for Low Ambient Light.
|Figure 1b. Basic Screen Mode in 0 to 2,000 lux Ambient Light||Figure 1b. Adaptive Display Screen Mode in 0 to 2,000 lux Ambient Light|