This was our other focus during the Boot Camp -- using light to get drama and texture. I know "dark" is not everyone's taste - Cliff even mentioned that during the session. Once again, he provided us with some tips (not settings) and then it was about experimenting, looking at what we have, thinking about how the camera will see it (in 3D).
All of these were taken with natural light only - no flash, reflectors or assistants.
#1 This was taken in a hotel room.
#2 Taken in a public building in Philly (yes he did have to get permits for us)
#3 Taken in a public building in Philly
#4 Taken in a public building in Philly