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The 42772 revealed some interesting behavior in my grayscale and gamma tests, but one thing stood out: tremendous color volume. There are a few issues here, but with proper setup, this is a stunning monitor.
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 default grayscale run is good enough that I might say the 42772 doesn’t require calibration. But the gamma trace tells a different story. It is far too dark at the default 2.2 setting, which reduces the advantage of that large color gamut and neutral white point.
The answer is to set gamma to 2.0 and adjust the RGB sliders. If you select the User color temp without adjusting, it is very green in tone. And if you just leave the color temp on Warm, the gamma won’t flatten out. If you have the means to calibrate, by all means do. Otherwise, dial in the settings I detailed earlier for a much-improved image.
Comparisons
Usually, I won’t recommend adjusting RGB controls if the result is a higher DeltaE score. But 0.1 is an invisible difference. And the User color temp is necessary to improve gamma tracking. Both 2.4 and 2.5dE indicate no visible errors in grayscale tracking. Getting gamma right is equally--if not more--critical to picture depth and color saturation. The final gamma scores are mid-pack, but they positively impact gamut accuracy, which I’ll show you below.
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.
As previously stated, the 42772’s color gamut is very large. Both red and green are slightly past the DCI-P3 triangle perimeter. Red is oversaturated at every point, which makes the image a bit unnatural. The dark gamma has a deleterious effect on color vibrance in every kind of content, dark, light and in between.
With adjustments in place, the color tracking is significantly better. Only blue is a tad under-saturated and green remains slightly off-hue. But with an average of 2.61dE, there are no visible errors. The lighter and flatter gamma means the picture is much more realistic and vivid.
Comparisons
The 42772 posts a solid third-place finish in the color accuracy test. All the monitors here are measured against the DCI-P3 spec. In terms of accuracy, this is about as good as it gets.
The 42772 becomes a stand-out display in the volume calculation. Only a handful of monitors I’ve tested have more color than this. With a hair less than 98% coverage, this Monoprice is in an elite group. There is no sRGB mode, so that coverage is a whopping 145.2%. Some SDR games can look a bit overblown, but I suspect few users will complain about this. The 42772 is fine for color-critical work in the DCI-P3 realm. If you need to edit sRGB content, a profile will be necessary.
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