Color Accuracy and Gamma

We start our tests by measuring color space and screen uniformity. Uncalibrated performance means the out-of-the-box settings a monitor ships with. Calibrated performance is what results after the monitor has been put through our DataColor Spyder calibration process. Our aim (target) is to see display values at a Gamma of 2.2 with a target 6500k colour temperature and an aim of 120cd/m2 brightness. Luminance is candelas per square meter (cd/m2), also called 'nits'. By default, the screen is set up at default after a factory reset.

The monitor defaults close to DCI-P3 (wide color gamut) enabled as opposed to sRGB. While this mode is less visually striking, it accurately reflects the original colour design of a game or movie, which is typically mastered in this color space (unless playing in HDR). This mode is also advantageous for content creation, ensuring your photos or videos appear consistently on various displays. 

Our measurement brings us to DCI-P3 a proper 97% coverage which is terrific, this range falls between DCI-P3 and BT.2020 HDR. The color setting is not defaulted to calibrated to a specific gamut like sRGB. The monitor comes pre-calibrated from the factory with good sRGB accuracy, defaulting to 8 bits per color out-of-the-box. The "wide gamut" options (default) do not precisely correspond to either DCI-P3 or BT.2020, but this is not a concern for professional or prosumer monitors.

Gamma

These monitors come factory-calibrated for you; we aim for a gamma of 2.2, which is also the default for the ASUS configuration.

To the right the calibrated sRGB mode measurement (spot-on), and with a wider Gamut, we're off (left). Wide colour gamut Gamma deviation straight out of the box at factory settings was closer to 1.8 in reality, it's not an issue you can configure gamma in the menu settings. And yes this one was set at 2.2

OLED monitors do exhibit greater color inaccuracies due to the nature of the display panel. These discrepancies are noticeable in certain situations, such as when displaying lighter skin tones that appear dull or unhealthy. While these issues are subtle enough that most users might overlook them.

Realistically the naked eye will be hard-pressed to notice/see △/E difference greater than 4 even. When selecting the pre-calibrates SRGB mode we get an excellent 1.46 △/E average, well below the advertised 2. When configured at Wide color gamut (default) of course things will differ with richer colors and we hit 3.19. As a gamer you'll want that wide gamut though.