Magic Lantern "Dual ISO" Function

No sound yet in any camera, AFAIK.
On the 6D, it works, but resolution is very low because the SD controler is very slow. Or you can use a higher resolution, but then there's a very short duration limit (around 120 frames; for this, dual-iso doesn't make a difference).

If all the SD card controller can do is 40 MB/s, then max resolution at 24p with full sensor would be 1792x556, which has a very wide 3.2:1 aspect ratio.
For 2.40:1 ratio (1792x746), you'd need 54MB/s.
For 16:9 (1792x1008), it would be 73 MB/s.

outdated chart:
Magic-Lantern-raw-chart-7-4-13.jpg


updated chart:
https://docs.google.com/spreadsheet/ccc?key=0AgQ2MOkAZTFHdFFIcFp1d0R5TzVPTVJXOEVyUndteGc#gid=5

thread where ML devs posted this chart:
http://www.magiclantern.fm/forum/index.php?topic=6215.0
 
Any updates of how is moire and aliasing using dual iso these days? I'll be shooting a commercial in january which has lots of wide dynamic range situations, i just bought a tiffen ultracon 5 which will help me while shooting raw, but using it with dual iso would be extremely useful only if aliasing and moire its not a big issue.
 
Common that's not true, using dual iso 100/800 or 100/1600 its way better than using 100 in terms of absolut and usable dynamic range, the thing is it comes at the cost of resolution in some highlights and shadows and also moire and aliasing. i'm totally sure about my statement, i have tested it myself a while ago.
 
I would use 100/400 instead of the more aggressive options, and yes, it gives you better DR, but my point was: if you can stay at ISO 100, you'll have nearly the same usable DR as a blackmagic. That should be enough for many demanding situations. If you are afraid of the artifacts of the dual-ISO function, but can manage to stay at ISO 100, it's a very viable option.
 
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