Here is another great news from Magic Lantern team. 5D Mark III sensor now got another 1/2 stop more dynamic range, which show numbers of up to 15 stops of DR when using this feature combined with the ‘dual_iso’ module that Magic Lantern already includes in their nightly builds.”
According to Magic Lantern, 5D Mark III will soon get a “sensor update”. This new feature will soon show up as nightly build from ML.
User Marsu42 from CR forum
This means that for example on 5d3, iso 800 with ML has more dynamic range than iso 100 with Canon :-> … and at high iso you’re getting 7% more dr which is nothing to sneeze at, esp. since it builds upon Canon’s advantage vs. Nikon: d800@6400 = ~8.3 & 5d3@6400 = ~9.4 ev making good ol’ Canon the superior sensor for low light high contrast shooting, esp. the newer 6d.