A tip of the hat to Gordon (Greyflash) and others who helped me figure out what the SU800 is all about. I use on-camera flash a lot, but have shied away from multiple flash wireless CLS because it seemed complicated, and involved a number of bright control flashes that are distracting. But the SU800 makes the setup easy, and the control flashes are mostly infra-red, virtually unnoticeable. Oh, and the SU800 is very lightweight compared to an SB800. I picked up the SU800 yesterday, and tried it out with some very difficult subjects... glass items. If you've ever tried to shoot glass with an on-camera flash, you know it's almost impossible to get a good result. View attachment 91668 Can't wait to try it out on people. And since the SU800 can control 3 groups, I'm going to buy an SB600 for a hair light.