Thanks Olympus : firmware 1.3 for XZ-2
1)solved the AF at long zoom in low light.
2) solved video AF noise
3) picture review zoom speed went so much faster , love this
4) solved intermittent picture rotate problem. (Some vertical shots didn't rotate.)
and most of all, thanks for dropping the price of XZ-2 to very reasonable level.
Looking forward to my next Olympus point and shoot.