Magic Lantern has long been a fan favourite to “unleash” the features of Canon cameras we wish they had. Lately this has included pushing what we can get out of the sensor.
As reported on Planet 5D:
“Tests have been done by ‘Marsu42’ of CanonRumors, 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.”
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. According to sensorgen.info the 6d should add another 2/3 stop (once the code is adapted for it) making good ol’ Canon the superior sensor for low light high contrast shooting.
Since this is a new software update I’d recommend you proceed with caution, however, these are exciting results for both stills and video shooters!