Quote Originally Posted by tkamiya View Post
Can you give me an idea what would B400 be able to do? Say I have a couple standing under a tree. B400 aiming a 40" umbrella located 15 feet away as a key light. Fill is natural lighting. It's a full length portrait. Would that be sufficient?

I have no reference as to how many WS can do what....
My WL10000 would do that, so I suspect a b400 would do that quite sufficiently as well. They are probably comparable power. If the umbrella is a partly reflective umbrella; no problem. If it's a sheer umbrella, you might want the more powerful one. It's not much more $ for the b800.