The uniformity of the backlighting is an important factor for the colour accuracy. When displaying white there's not much we can complain about in terms of the PDS241's uniformity, even compared to the highest brightness, the lowest measured brightness comes close percentage-wise. In absolute values the blacks are also very close, however percentage-wise the difference can become quite big. However the difference between 0.16 and 0.11 cd/m2 is not really noticeable on a black screen, so take these numbers with a grain of salt.
All in all we are satisfied with the uniformity of the AOC PDS241. If you look at the detailed measurements below, you will find that the variance in colour error relative to the middle is quite low and that it remains under the critical limit of 3. The colour temperature also does not vary a lot. We see some larger difference in the contrast, however once it again it looks much worse in the harsh green and red of our schematic view, compared to real-world scenarios. A difference of 859:1 and 1160:1 is not really that enormous.
Bear in mind that the colour in the boxes with the uniformity of black, white and the contrast is related to the results of the measurements for that model; not to the absolute values.
- As far as black goes, 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.