while what Matt has stated is true..
when working with shutter speed @ 200 or below and speed lites keeping your fstop around 2-8... the general rule that i have stated does apply.
the shutter speeds controls ambient light is still a valid statement..
i have not notice much difference in ambient light when i move the fstop around ( 3-7 ) and keep the shutter speeds the same..
what i do notice is when i bump ISO around.. then the whole scene is change and you have to find new numbers..
Matto is correct.. but i wanted to state the 2 main rules for those who haven't worked with flash and ambient and where to start.
from last nights double senior shoot


Love your work, been following your post here and on the AB thread.
I am wondering why it seems like when you started using the AB and BD the sky and some of the background looks washed out, I think it looked better when you were using the 580 and Softbox.
I am a total novice and still learning a lot from you guys, specially you and Tony, you guys are great and I love your setup pictures, they help quite a bit.
Mike









