I’ve purchased a second SB800 to use with my D2H and other SB800. I’ve been experimenting, and I think the system is great. I’ve seen a number of good examples (including those at Dave Black’s site), but no one seems to say, I set the exposure compensation values to X because… All the set-ups appear to be done via trial and error. Am I missing something? Seems to me there should be some more mathematical way for figure this out other then trial and error. Any thoughts?