The "cloudy" option just affects white balance. For low light, you need a slow shutter speed, and correspondingly, a slow flight speed in order to not have image blur.
Didn't know that. The OP listed he was interested in mapping commercially so I guess I expected them to be looking at certs that would demonstrate competence in that field. Oh well, they seem to have gone missing anyway!
I think you meant ASPRS certification ?
AVUSI has basically become a lobbying organization trying to get all Chinese manufactured drones banned in the US.