I wasn't happy with the eye glints when I used an umbrella, so decided to see what would happen if I used the small Lumiquest Softbox on my 580 ex (on the right of the bear. There's another 580ex in the larger softbox at the left. Monte Zucker Reflector on the bear's left. No light on the backdrop. Click on "next" to see the results. (This light setup is not something that Janet suggested we used - I was just experimenting!)