@Aglet - from what? I mean the first "from"
That's the beauty of using a system with super low noise; take one shot exposed to not clip the highlight areas and bring the rest back in post for an HDR effect without having to try bracket a physically changing scene.
I can't do this kind of shot with my Canon gear without running into serious noise problems in the darker areas. My 7D and 5D2 are terrible at this kind of work. 5D3 isn't much better than 5D2 from my limited testing. Hopefully a few FF body from Canon with improve this.
In fact, I can continue to push the exposure curve in that first shot to the point that the beach in the lower right corner is up to midtones will full detail and only a bit of chroma noise than can be processed out. An impressive imaging machine, that's why I bought one and that's whey my Canon gear gets used less.