Thanks for the kind comments.
This was shot full frame at 1920x648 and then stretched 167% vertically in post.
I had my camera set to 1280x60fps in the Canon menu. No crop, FPS override at 60fps, 10bpp, and 1920x648 resolution inside MagicLantern. This way I managed to record around 10 to 12 seconds of continuous footage in my old and trusty Komputerbay 1000x CFcard, before it stopped recording because of a dropped frame.
I used the crop3x build from the Experiments page
, because it's the only one with the option of 10bpp recording for the 5DmkIII 1.2.3 (AFAIK, I might be wrong).
The ability to record at 10bpp is awesome, file size is much more manageable inside the camera, and quality wise I was quite impressed, and I didn't have any problems with it. I used the latest version of mlv_dump from the Utilities page
But with dreamy stuff like that I would use stabilization, Warp or so.
I totally agree that I should have warpStabilized all those shots.