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To verify the PE320QXT’s color accuracy, I tested grayscale, gamma, and gamut tracking for the Color Space modes that match commonly used standards. I noted that they cannot be calibrated in the OSD except for General, which uses the monitor’s full native gamut. The charts are below, and at the end of this page is a table summarizing all the error values.
Grayscale and Gamma Tracking
Our grayscale and gamma tests use Calman calibration software from Portrait Displays. We describe our grayscale and gamma tests in detail here.
The PE320QXT’s default color space in the User mode is General with a 2.2 gamma and D65 color temp (Warm setting). It runs a tad cool with barely visible errors at 90 and 100% brightness. You won’t see a problem in most content. Gamma is a tad light as well. I tweaked the RGB gains to visual perfection, though gamma is unchanged. Overall, though, the picture is excellent, more than enjoyable for general use.
The other modes are fixed and cannot be adjusted in the OSD. They all have slight errors in grayscale tracking, being either a tad cool or a tad warm. The furthest off the mark is HDR (BT.2020), which is very warm in tone. This will manifest later in the HDR tests. In all cases, gamma is either on point or a little light.
Color Gamut Accuracy
Our color gamut and volume testing use Portrait Displays’ Calman software. For details on our color gamut testing and volume calculations, click here.
Color tracking takes a middle road between P3 and BT.2020. The PE320QXT is a P3+ monitor thanks to its Quantum Dot layer. But note the direction of the green hue. It tends towards BT.2020. This is a compromise that keeps color from being too garish while taking advantage of that bonus volume. This creates a more natural look. I noted that Adobe RGB was on point for saturation and only showed slight hue errors in cyan and magenta. The PE320QXT has enough green to qualify as a true Adobe RGB display. Many other pro screens can’t make that claim.
Grayscale, Gamma and Color Gamut Test Summary
Below is a table of all the color space options’ results. Volume figures are impressive, especially for Adobe RGB and BT.2020, where the PE320QXT fills more than nearly all its competitors. Gamma runs a tad light and varies anywhere from 1.36 to 4.54% from its intended reference point. Grayscale errors are right at the visual threshold with a few slight issues but nothing significantly wrong. Gamma range values are very tight with very few variations.
| Row 0 - Cell 0 | Grayscale Error |
Gamma Range |
Gamma Deviation |
Gamma Actual |
Gamut Error |
Gamut Volume |
General |
2.30dE |
0.09 |
4.54% |
2.10 |
2.91dE |
121.40% |
Adobe RGB |
3.92dE |
0.10 |
3.63% |
2.12 |
2.30dE |
96.02% |
sRGB |
2.59dE |
0.25 |
2.08% |
2.35 |
1.75dE |
97.96% |
BT.709 |
2.76dE |
0.14 |
3.33% |
2.32 |
1.91dE |
98.22% |
DCI |
3.10dE |
0.09 |
1.36% |
2.17 |
1.83dE |
97.51% |
BT.2020 |
6.22dE |
0.16 |
0.42% |
2.41 |
4.02dE |
81.03% |
Calibrated |
0.24dE |
0.10 |
2.72% |
2.14 |
2.37dE |
121.09% |
Test Takeaway: The PE320QXT is a color-accurate monitor with a good selection of modes for professional use. It can’t be calibrated in the OSD, though, which might be an issue for long-term maintenance of standard references. It also lacks a P3 Cinema mode, which could be a problem for video post-production. In the General color space, it calibrates to a very high standard. It also has more color volume than just about any other professional display I’ve reviewed.
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