Nixeus NX-VUE27 27" Monitor: High Resolution for the Massesby Chris Heinonen on September 20, 2012 6:10 PM EST
With the primary measurements out of the way, we now turn to testing display uniformity. It's easier to get good results at the center of a display, while extending the results to the corners and edges requires a lot more effort. Let's see how uniform the Nixeus is.
When the center of the ANSI grid is set to 200 nits of brightness, the surrounding blocks are all close, though it is better at the lower section of the screen with an average of 95% of the center brightness. Once you move to the outside of the monitor the readings drop by at least 7%, falling all the way to a 17% drop off in one corner. The overall average is 89% of the center brightness, or 181 nits. This is actually pretty normal for monitors, particularly larger models, and it's only very expensive professional displays like the NEC display we reviewed that tend to do better.
Black uniformity does not mirror the white uniformity in this case, which could be due to the updated testing method, panel and backlighting uniformity, or a combination of both. The deepest blacks we get are in the corner with 0.353 nits in the upper-left, which also happens to be the darkest spot in the white uniformity testing. The brightest spot, no surprise, is in the center of the screen that measures 0.420 nits. The average black level winds up at 0.390 nits for all measurements. This is okay for black levels but certainly not outstanding.
Our contrast is more uniform across the panel, as areas with high white levels typically have high black levels as well, an indication of the backlight level in that section of the screen. The exception seems to be the upper-right section of the screen where we have higher black levels and lower white levels. I thought these were suspect and measured them multiple times, but always found the same results. The average contrast ratio for the center of the panel is 473:1 and for the outside it's 461:1, so that is fairly uniform for the whole display.
Looking at the dE uniformity of the Nixeus, it tracks really well across the whole screen. The main errors occur in the grayscale, which is what we typically see, but otherwise the numbers are almost spot on across the monitor. We do see a rise on the left side of the monitor relative to the rest of the display, likely from the lighting uniformity issues, but there aren't any extreme variances.
In summary, the uniformity of the Nixeus NX-VUE27 is decent and is similar to what we have seen from other non-professional 27” flat panels. The contrast ratio leaves a good bit to be desired, as the black floor is not what it should be in this display. I could enable the Dynamic Contrast mode to help that, but since it has only one setting and is very noticeable (not in a good way), I wasn’t inclined to enable it.