> Well that's interesting ... Thanks. I will have to Manual >focus when using live view.
Are you referring to the AF fine tune not being used?
AF Fine Tune is to adjust between the difference in the imaging sensor and the focus sensor position. Since they are two different sensors, and a different light path, it's a very precise calibration to get them in sync.
IN live view there's nothing to synchronize, since the focus on live view (whether automatic or manual) is against the imaging sensor all the time, the focus sensor is not used, so there's nothing to fine tune.
It's not so much that it doesn't work, as it is not relevant.
Apologies if that's not what you were referring to.