I'll be experimenting more soon (tonight hopefully) to try to fully understand, but does anyone know what the Flash Shutter Speed setting does and how it relates to Flash Sync Speed? Not sure about other bodies but in the D700 the flash shutter speed option is under e2 and the options range from 1/60 to 30s.
Also, it's been bugging me a little but what is FP short for in "Auto FP" (under flash sync speed, e1)?