A recent purchase of a full frame camera led me to see what the capability is like in low light. Whilst I didn’t push the camera to it’s maximum of 256000 ISO (!!!!!), I dabbled with the ISO at 8000 and took these two photos handheld. I was surprised at the performance even though I already knew the that the Canon 5D Mk III performed well in low light.
The feature image was taken at ISO 8000 | Canon 24-70mm f/2.8L at 47mm | f/3.5 | 1/100 sec.
The image below was taken at ISO 8000 | 24mm | f/8.0 | 1/30 sec.