ML override in the ViewFinder?

[stanalekseev]

I think I've read (about) it somewhere but can't seem to find it now...
Is it possible to use ML in the viewfinder in terms of overriding the shutter speed and the ISO?
If not - is it technically possible for a T3i (600D), meaning should I expect it in future releases?

[nanomad]

Can you provide a bit context? What are you trying to achieve? What mode are you using your camera in?

[stanalekseev]

What I'm trying to do is to use primarily Manual mode - I guess what I'm looking for is more fractions (third or half stops) in these two parameters.
So currently I can only go with the Canon's default on the ISO (100,200,400 etc) and the shutter speed.
Can I active it somehow or have I disabled it somehow?
I tried to use the LiveView shortcuts for the ISO (disp+ left/right) in the viewfinder but it didn't work lol

Edit:
If it matters in any way I'm using the Canon's 18-55 IS II kit lens

[pvg2012]

You won't gonna notice the difference, because ML only works on your LCD screen.
No chance of getting it work in the viewfinder.

+ If you set for example ISO 640 on the ML, it will work, it just'll display it as ISO 800.