Hi Pics2, interesting, what speed can you use with the P1 before loosing light?
The B1 is supposed to cover even 1/1600s without loosing lights, most heads don't fire that quick. And then I don't know which trigger support this.
In the profoto specs the air is up to 1/500s, so are the pocketwizard plus III.
Except the Pocketwizard multimax(copied from specs):
Synch Speed Up to 1/250 (focal plane)
Up to 1/500 (leaf shutter)
Up to 1/1000 (Fast Mode)
Not sure what Fast Mode means.