Color performance after a full software calibration
Now let’s correct the white point and the RGB balance and give the presets a hardware calibration. Of course, the PG27AQDP also gets a software calibration, because the Adobe RGB color space could also be used here.
OSD Setting D65 @ 170 Nits/200 Nits
The RGB settings for red = 100; green = 100 and blue = 98 and the brightness to 60, then you get approx. 170 nits (full white). For 200 nits, set the brightness to 71. These settings also affect the default color space, so you have basically already calibrated P3 by default.
OSD sRGB Color Space CCT Corrected
OSD DCI-P3 Color Space CCT Corrected
I would say that this is very suitable for everyday use. The color space clamping for sRGB slightly overshot the mark in the red corner, otherwise the maximum deviation would have been even smaller. Well, all that remains is a software calibration, which can now squeeze a few more points out of the panel.
Full calibration with Calman Ultimate
Sometimes the LG OLEDs are really bitchy, the PG27AQDP is really hard to calibrate. Gamma tracking is a real rollercoaster. For sRGB and P3, however, it doesn’t look too bad. Unfortunately, Adobe RGB is clearly out of the color accuracy range for photo professionals at 100 percent. The LG panel’s color space coverage is not quite sufficient. Nevertheless, you can work with it if you turn a blind eye.
Spectral distribution and “Eye-Safe
For a change, here’s a spectral analysis that gives a different picture. The typical WOLED image.
Spectral distribution @ D65, 200 Nits (100 % White Window)
The peak here is at 455 nm – i.e. in the blue light spectrum. Unfortunately, I cannot say with certainty to what extent this can already be described as eye-safe.
Uniformity
The image uniformity of the PG27AQDP is very good, and the viewing angle stability is also good. In terms of the dirty screen effect or banding – with WOLED panels – you have to be a bit lucky with the panel lottery. With my sample, it was ok so far. There are problems from time to time, but so far older models are more likely to be affected.
Image errors and other issues
Apart from the typical OLED problem with VRR flickering, there was nothing to criticize here. ASUS at least offers a feature to minimize VRR flickering in the OSD.
Anti-flicker:
Off = 40 to 480 Hz incl. LFC (effective 0 – 480 Hz)
Middle = 160 to 480 Hz incl. LFC (LFC below 160 Hz)
High = 200 to 480 Hz incl. LFC (LFC below 200 Hz)
Personally, I usually only notice VRR flickering in game menus or when I play Gray Zone Warfare with Night Vision (night missions). Then it’s really annoying and almost unplayable without a frame limiter. Too high frame rates! It remains to be seen to what extent the VRR flicker problem can be solved technically. But the fact is that it is only noticeable in exceptional cases.
Another very positive thing I have noticed is that text readability is much better with the new RGWB layout. This is on the same level as QD-OLED. You should really be able to live with that, even if it doesn’t come close to an LCD with standard RGB layout.
Sound reproduction
The PG27AQDP does not have loudspeakers. Sound via the built-in audio connections works without any problems.
Webcam and microphone
Are not installed. This brings us to the topic of HDR.
- 1 - Introduction, Features and Specs
- 2 - Workmanship and Details
- 3 - How we measure: Equipment and Methods
- 4 - Pixel Response Times
- 5 - Display Latencies
- 6 - Color-Performance @ Default Settings
- 7 - Direct Comparison and Power Consumption
- 8 - Color-Performance calibrated
- 9 - HDR-Performance
- 10 - Summary and Conclusion
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