The argument about why this camera is needed, ie the size issue, I think, is hogwash. If Panasonic thinks so, they are fooling themselves. With a lens on, the GF1 is still smaller, and the PEN even smaller considering the collapsable kit lens. Sony is successful because of its brand name and because of its marketing. While I have played with the NEX, and I found it responsive and completly adequate other than the lack of quick controls, It actually felt larger to pocket or store than my E-P1.