I was wandering if it would be possible to set up 2 flashes on triggers but synced differently. I.e one 1st curtain and one 2nd curtain. A lot of people will be thinking "why?" but this would be really helpful for some of the work I do.
The camera could trigger some external timer (StopShot for example), which could then trigger whatever sequence it wanted, whenever it wanted, with whatever timing you program into it. But using only the camera, I don't see any way the camera could issue two triggers.