Equivalent vs Analog ISO

[theartofweb]

Hi,

   I want to set ISO to 160 in ML. Yet, canon analog iso only goes from 100 to 200 while the the canon digital iso does -0.3 EV (subtract). So, although I set 160, on the viewfinders it reads 200 ISO. What's the problem? I'm on the 5d2.

Thanks

[theartofweb]

Also, is ISO 80 (equivalent iso 100, analog iso 100 and ML digital ISO -0.3 EV) for h264 only or for RAW also?