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Uncalibrated – Maximum Backlight Level
My X27 X1 sample measured over 310 nits peak, which is well above Acer’s claim of 250 nits for SDR content. While it’s not the brightest OLED out there, it is more than bright enough for use in a typical media room or office. There is no variable brightness available in SDR mode, so full field and 25% window patterns measure the same. Black levels and contrast cannot be measured.
After Calibration to 200 nits
Calibration doesn’t change the contrast result; it still cannot be measured. I noted that brightness changed inconsistently as I moved the slider up and down. To set 200 nits, an ideal level for SDR content, I only had to reduce it by a few clicks from the max. But further down the scale, it made much finer changes. It’s a bit difficult to set a precise level.
Test Takeaway: The X27 X1 delivers the same infinite contrast and deep blacks as any OLED display. It isn’t super bright, but it is bright enough. It only has constant brightness for SDR, which isn’t unusual, but it would be nice to have the option. However, variable brightness is available for HDR.
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