Color Gamut and Color Accuracy:
While the display Pixels Per Inch PPI and pixel Resolution seem to get most of the attention, it is the display’s Color Gamut together with the Factory Display Calibration that play the most important role in determining the Wow factor and true picture quality and color accuracy of a display. The Color Gamut is the range of colors that a display can produce. If you want to see accurate colors in photos, videos, and all standard consumer content the display needs to closely match the Standard Color Gamut that was used to produce the content, which is called sRGB / Rec.709. A display with a larger Color Gamut cannot show colors that are not in the original content - it just exaggerates and distorts the colors. Most of the recent generation LCD Smartphones have Color Gamuts around 60 percent of the Standard Gamut, which produces somewhat subdued colors. The iPhone 4 has a 64 percent Color Gamut, but the new iPad pulled way ahead and has a virtually perfect 99 percent of the Standard Color Gamut. The iPhone 5 has an almost identical Color Gamut to the new iPad and the Viewing Tests confirm its excellent color accuracy.
While Apple has clearly made a big effort in getting the Color Gamut very accurate for the new iPad and iPhone 5, Samsung has not bothered to calibrate the Color Gamut on any of its OLED displays, so they are wildly inaccurate and produce inaccurate and over saturated colors. The Color Gamut is not only much larger than the Standard Color Gamut, which leads to distorted and exaggerated colors, but its Color Gamut is quite lopsided, with Green being a lot more saturated than either Red or Blue, which adds a Green color caste to many images. The Viewing Tests bear this out. Compare the Color Gamuts in this Figure and below.