06-19-2020, 12:40 PM
The issue is that brightness is not linear, and some slight manufacturing difference like the specific voltage drop of the leds will cause the point where the screen cuts off to be on different values, due to the nonlinearity of it it also means that the "dark" levels are very close together, so giving the cut-off point some margin for manufacturing differences will mean that for some people the lowest brightness setting is way brighter.