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To avoid confusion, I recommend turning off the AG346UCD’s Game Mode and sticking with the default Standard picture or Eco mode. This mode is relatively close to the mark but has a little room for improvement.
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 AG346UCD’s default chart is slightly deficient in green, but the errors barely crest the visible threshold of 3dE. This is an acceptable performance. The gamma trace rides a bit below the reference line, but since contrast is so high, you won’t see a problem with actual content.
Calibration doesn’t affect gamma which is a good thing. Grayscale tracking is now extremely close to perfection with all errors well under 1dE. This is reference-level performance.
The sRGB gamut option grays out all picture controls but measures well with a 3.29dE average grayscale error and near-perfect 2.2 gamma. Only a slight dip at 90% can be seen in the chart. This makes the AG346UCD suitable for color-critical work in the sRGB realm.
Comparisons
The AG346UCD’s default score of 3.18dE is reasonably close to the mark and shouldn’t be seen as a negative. It can be enjoyed without calibration. But with the tweaks I provided earlier, you can take it to a class-leading 0.26dE. That’s one of the lowest scores I’ve ever recorded. Gamma tracking is extremely tight with a 0.06 range of values and an average that’s 2.73% off the reference. The actual value is 2.14. This error is hard to spot in actual content.
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.
The first chart shows that the AG346UCD is super colorful in its default state. This represents the Native option in the color gamut menu. There is a little oversaturation in all three primaries but not enough to cause a visual problem. The points track in a linear fashion which means all fine detail is fully rendered. The 2.16dE average error is quite low. Calibration tightens up the chart nicely with near-perfect hues across the board. The sRGB chart shows slight oversaturation in red but no visible hue errors. Overall, we’re seeing reference-level color here.
Comparisons
It’s hard for any OLED to stand out in the color accuracy test when the numbers are this good and this close. It is not an exaggeration to say that you won’t find a bad example. The AG346UCD’s 1.62dE score is average among this group but well above average when compared to all other monitors and technologies. This is excellent performance.
It seems the gamut volume record just won’t stand for more than a few days. Quantum Dot OLEDs typically cover around 110% of DCI-P3 and I’ve had some touch 111%. The AG346UCD is the first to crack 112%. While these are minute differences, the numbers don’t lie. The AG346UCD is officially the most colorful OLED monitor I’ve tested. And its near-perfect 100.95% sRGB volume qualifies it for critical applications.
Test Takeaway: Concerns about brightness are largely soothed with color results this good. The AG346UCD is beautiful to look at thanks to deep blacks and color saturation for days. It’s accurate without calibration and even better when adjusted. Gamma is nearly spot on as well which means you’ll see every fine detail the image has to offer. Color accuracy can’t get much better than this.
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