After Calibration to 200cd/m2
Calibration helps the black level and contrast numbers a little. Remember that none of the Ultra HD TN-based panels we’ve tested can match the results of lower-resolution glass in these tests.
It isn’t often we can increase contrast by calibration. Thanks to the XB280HK’s well-designed OSD controls, it becomes an exception to the norm. Acer still can't rival the BenQ screens, but it comes closer to Planar's solution at least.