downloading this freeware tool to my c:\ root
https://www.clickmonitorddc.bplaced.net/
I created two batch files
Dark.bat
c:\clickmonitorddc_6_4 dellp b 2 dellu b 2 lgultra b 2
bright.bat
c:\clickmonitorddc_6_4 dellp b 60 dellu b 60 lgultra b 60
And when gphotoshow runs, it calls the dark.bat as "run before"
and bright.bat as "run after"
And I'm sleeping better
