Is that true? Digic is for low noise jpegs? doesn't have much to do with RAW?
I always thought the Digic stuff was meant for processing speeds and autofocus speed(the autofocus of the viewfinder and screen, not the autofocus of the lens). Basically allowing us to take faster pictures and such without losing quality.
I don't know, I may just be making stuff up.
In most canons the Digic does handle the focus too. (7D and 1D series have a separate focus cpu).
Remember the digic is really in essence a generic streaming processes bought in from fujitsu or somewhere and programmed up by canon, its probably identical under the hood to nikons expeed or whatever.