Quote Originally Posted by tkamiya View Post

I'm well aware of that. Knowing OP is at very beginning stage, I'm sticking with textbook explanation of pushing/pulling. I'd rather have op get the ballpark explanation than getting buried in technical accuracy and lose the big picture.
I know you know.

I just think that it is really important for beginners to understand that pushing and pulling are development controls, that influence exposure, rather than exposure controls, that influence development.