This is simply just the coolest tool, flash I’ve ever used. I just wish I had a reason to use it more often. It comes out perhaps a half dozen times a year when i have small critters, subjects to photograph. You can use the SB-200 flash units anytime, anywhere TTL but I just use it for macro work. It attaches right to the front of the lens with the units rotating on the ring whereever you need to place them. They are fired with the SU-800 which is a great unit. I have a couple of them which get used as part of the R1C1 kit or to fire off SB-900s in other setups. You’ll notice I have diffuser material in place in the flash units. It’s always there to soften the light even more.