I am shooting for some camps and last week I got the challenge and joy of shooting inside a fire training survival house. Nearly no light besides some low blue light, and one low red light in another location. *Very* low light, to say the least. Close quarters (i.e. "caved in" roof). Fake smoke (flash reflects off it) Fast moving teens trying to break records I got some fun pics last time, but another shoot is Tuesday with a different group. I have a 5D MKII + kit lens 85mm /f1.8 IS 70-200 f/4L IS 430EX speedlite (I think) So, I totally get I am not going to get high quality shots, best goal is fun shots...where you can actually see the kids face. Any ideas?