#1. "RE: Using d700 as commander with 2 sb-600's" In response to In response to 0 Fri 09-Nov-12 03:37 PM by Scotty
Ely, Cambridgeshire, GB
Set the SB600s to different groups on the speedlights themselves - group a and group b. Set them to manual on the D700.
Then on the d700 you should be able to set their outputs to different levels. As long as they are both set the same channel they will both fire; the different groups will fire at whatever output rates you set them to... At least that is how I do it on my D200...