>"Guerilla Group Shooter" ... It has a nice >ring to it.
LOL,,, I have spent so many hours making group photos work in lousy conditions. They have been high school choirs and concert bands. I'm always scheming of ways to force things to work.
I usually shoot with three flash units. Two are outboard and one on camera. My light fall off from side to side is immaterial. The big concern for me is uneven illumination from front to back, Also, the pinhead affect is a concern when you get too many rows.
It also is a good idea to have more people in the back rows than the front rows. Otherwise, perspective makes the back rows appear shorter and your nice rectangle looks like a trapezoid. Of course, this is most apparent when my groups get up to 230 in size.
Scott Chapin Powder Springs, GA, USA Nikonians Team Member