ETTR - exposure compensation stuck at +5 EV

[a1ex]

Yes, enable both.

In general, Dual ISO works best if the base ISO is 100, and the recovery ISO is higher (400-1600). The reason for that is buried somewhere in this thread: www.magiclantern.fm/forum/index.php?topic=10111

exiftool image.DNG -dngversion, but it won't help with hot pixels (I'll let you figure out why).

At what ISOs do you get hot pixels that can't be corrected by cr2hdr?

[ursamajor]

If primary ISO is 1600 ISO I get very few hot pixels and too many at 3200 ISO. But 3200 it's already too much, I used it just for experiments.
Anyway Dual Iso has stunning results.