A uniform lighting by the backlight is difficult with the very wide 21:9 monitors. With the uniformity measurements we usually see less great ratios for between the lowest and highest measured values for white. Again, this is very distinctive for these models, with one exception: the LG 34UM69G-B performs remarkably well. Not only with the uniformity of white, but also of black.
On the pages where we covered the individual monitors you can also find the sub measurements of the uniformity test. The explanation of this test can be found below.
- As for black: the lower the measured value, the better (=greener); if the value is higher this means worse (=redder).
- For white the colour coding is different, because there we set a specific brightness of 150 cd/m². That is why values that are closer to this setting green, values that are further away become red – the more they deviate the redder they are.
- As far as contrast is concerned, the highest contrast is green, the lowest is red – the values in between are marked by these colours. Greener is better, redder is worse. We emphasize again that these values are relative: a contrast of 1702:1 is excellent, but if the highest measured contrast is 2581:1, the former value is still marked in red.
- With the colour temperature the measurements are bluer the lower they are, yellower the higher they are.
- Last but not least the colour deviation: here you see a number for the DeltaE value in the boxes, where values below three are barely noticeable with the naked eye. The colour of the boxes shows the colour deviation of gray.