>>4325805multiple exposures seems to have been a big thing in the 80s and 90s judging by how prominently it was put as a feature on cameras and manuals and such. My EOS1, top of the line pro camera, has a dedicated control button combo for multiple exposures, rather than drive mode (which would go there later). Its really interesting. According to the EOS 1 manual, a good starting point (but not for every situation) is
>Double: -1 stop>Triple: -1.5>Quadruple: -2it can do up to 9 though and i guess you'd just adjust accordingly. can't even think of when you'd use 9 shots in one image, maybe tracking the moon or something?