The takes are around ten minutes long, however with some masterful editing it seems like a feature film shot with one continuous take.
Lit with mostly practical and existing light sources according the the cinematograper (Emmanuel Lubezki )
“we had to time all of the lighting changes, making sure you don’t see shadows. We were moving lights; we were moving diffusions. There were grips moving with me. Every time you see a shot, there were eight people moving with me. It was like a ballet — that’s what made it truly exciting.”