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Uncalibrated – Maximum Backlight Level
To find the EX271UZ’s brightest possible image, I had to measure several different picture modes. The default one, Fantasy, employs variable brightness so a 25% window measured at just over 400 nits while a full field was 265 nits. In the fixed modes, Display P3 and sRGB, constant brightness is used so 265 nits is the value for window and field patterns. The two Asus screens are a tad brighter but in practice, the difference is minimal. Like all OLEDs, black levels and contrast cannot be measured.
After Calibration to 200 nits
Calibration does not affect black levels or contrast; they still cannot be measured. I settled on Display P3 as the best mode for SDR content because it has the most color-accurate image and is easier on the eyes with constant brightness. The ANSI test also has an unmeasurable result.
Test Takeaway: The EX271UZ shows its brightest image in the default Fantasy mode, but I found better picture quality in Display P3 where it uses constant brightness. I also determined that Local Contrast had no effect on these tests. The EX271UZ is a typical OLED, which means it looks stunning with deep blacks and tremendous dynamic range.
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