Brightness and Contrast
The monitor has 90% Brightness and 80% Contrast by default. I achieved a 100nit level of white by dropping these settings to 50% and 55%, respectively. The brightness is regulated by pulse-width modulation of the power of the backlight lamps at a frequency of 240Hz.
The maximum brightness of 250 nits and static contrast ratio of 650:1 are average as today’s monitors go. There is nothing extraordinary about these parameters.
The dynamic contrast ratio (the last column of the table) was measured in the Scenery mode with enabled ASCR. The level of black was measured on pure black and the level of white, on pure white. My result is lower than the specified 4000:1.
The average uniformity of black brightness is 5.8% with a maximum deflection of 17.8%. For white brightness the average and maximum are 5.5% and 14.8%, respectively. These numbers are quite normal. The pictures based on the measurement results show that there are brighter bands along the top and bottom of the screen on black. On white, there is a darker spot in the right part of the screen.