Incredible! My friend was playing a show the other night, he let me shoot with his new 6D, and a solid 1.4 50mm lens. It just blows my mind. The amount of usable ISO at night is simply amazing.
He also had a super wide 14mm lens i got to use with some video. Its akin to being able to drive you dream car. Never had so much joy out of using a camera. And to think this camera has even more to offer.