Hello,
I like the idea of the recipes but I‘m wondering if I can implement a recipe for the Holy Grail day to night transition for time lapse. I think I will need some way to get the current exposure. If the exposure is less than -1/3 EV I would like to increase it by 1 EV (first by exposure time, then by ISO, …) and loop until it‘s completely dark. Unfortunately there is no command to get the current exposure 
KR Bernd