I don't have a ton of light in my living room. My cat was sitting still so I figured I'd try and get a picture of him.
Vivitar 55mm f/2.8 macro, ISO 6400, f/2.8, 1/20 sec, slight bit of tweaking exposure and NR in ACR but not much.
Pretty dang decent for ISO 6400, obviously there's noise but it's a usable picture. With the IS and high ISO can get available light shots in really low light.