About how can we disable the automatic brightness setting of a Mac screen according to ambient light, I spoke and I showed this in an article written some time ago. How to disable automatic brightness change on macOS.
Past days I installed a Windows 10 in Boot Camp on a MacBook Pro with "master" operating system macOS Mojave. It's like "beta" to the end, through Boot Camp I came with Windows 10 RedStone 5. Of course we are talking about a Mac dedicated to OS tests and beta applications.
After installing the Windows 10 operating system on Mac, the first thing that upset us was poor screen brightness. That's when the light was on maximum value. At least that's what the light control panel says.
How can we increase the screen brightness (brightness) on Windows 10 / Boot Camp
Even if the brightness is set to maximum, by activating the intensity control function depending on ambient light, Windows 10 does not allow the 100% increase in the light on the display. To avoid this inconvenience and to get a high brightness, the only option is to deactivate the "Change brightness automatically when lighting changes"
This is what you can do from "Settings"→"Display"→"Brightness and color"
After unchecking this feature, the "Change brightness" bar lets you increase the intensity of display light on a Windows 10 PC / Laptop.Low Brightness Windows 10 / MacBook Pro [How To Fix]