Someone asked me why I did this!

In my surface the luminosity curve does not satisfy me.

The display seemed to have only three levels of brightness, setting an average value (ie on the desk in the room in the morning) adaptivity did not fit values ​​for low-light (night) and lots of light, that is to say the brightness in the dark was not a minimum making it annoying for the view and unnecessary consumption of battery, instead with shaded light levels brightness became easily maximum, with again a waste of battery.

This forced me to move often the brightness bar manually, but now with my calibration does not touch more because it adapts automatically to any light condition.

Also the adaptation of brightness occurred after 3 seconds by the change of light, whereas now changes instantly in 0,1 seconds (100ms).