It's digital. One of the things I've been trying to avoid while post processing pictures lately is having too much contrast between the midtones and shadows of a picture. It's really weird when you have a medium tone section of the shot right next to a pure black and it's a clean cutoff between the two when it obviously shouldn't be so sharp of a difference.
Kind of like the spots on this guy's front left leg. Medium grey next to complete black even though both areas were in the same light... Just looks weird to me, so I don't exaggerate it.