I noticed there are 4 options to control iso. is there an explanation as to ideal combination somewhere? also i hear multiples of 160 is better but my 50d can't natively do this. with ml i can. does this mean if i see actual iso 160 or 320 that its going to be less noisy even though my canon only does 200, 400, 800 etc?
If you like technical stuff you might enjoy reading this thread (http://www.magiclantern.fm/forum/index.php?topic=10111.0).