-the world fastest Auto focusing system ,
-135 Focusing point
-The original external flash really look ugly and i don't think is useful
-pancake lens very sharp event at F2.8 . please check my flickr web link.

-Usable ISO is only up to 1600. (but It is more than enough.)
-Small size sensor with crop factor x 2.7 , F mount adaptor selling seperately FT-1 , but even add in also useless , coz all your zoom lens or prime lens become telephoto lens.
-J1 is MIC .

I tried both V1 and J1 during Nikon show The focusing system is really impressive me even better than my D3s , I will consider J1 instead of V1, because it is cheaper than V1 and V1 require to add external flash gan with additional cost

The Following link ISO 100 & ISO 1600.

ISO 1600
http://www.flickr.com/photos/bonpin/6265494687/in/photostream

ISO 100
http://www.flickr.com/photos/bonpin/6266026236/in/photostream/