Posted by BSG here, translated by Oleg.
He continues playing with the manual exposure settings:
- "Off" - default exposure and ISO determined by GCam.
- "Min. ISO" - it will try to set minimal exposure for ISO = 100.
- "Double exposure" - this will double the exposure while halving ISO.
- "Min. exposure" - this will lower exposure until ISO equals 1600 for Xiaomi Mi6 or MaxAnalogISO for other devices.
- "Super min. exposure" - will lower exposure until ISO equals 9600.