Vying for the same space as the Sony NEX7 is tough, really tough, but this is the one possible challenger:
"Images straight out of the camera were a little soft and benefited from unsharp masking as part of the editing process. Interestingly, this problem was confined to still shots as video clips were generally sharp.
Autofocusing was fast and accurate, even when zooming while shooting video clips and the focus tracking kept most subjects sharp while the camera was panned. Focusing in low light levels was competent, provided the subject contained enough contrast. However, we had to resort to manual focusing for low-contrast subjects after dark.
Metering was as accurate as the Panasonic G3 we tested recently and the GX1's dynamic range appeared to be similar. The High Dynamic mode in the Creative Control settings proved useful in situations where the subject brightness range exceeded the sensor's capabilities, as shown in the illustrations below."
Before we go on to the main dish, here's a reader commentary on the same Engadget page:
"Why does everyone simply forget panasonic G3? It has the same sensor as GX1, marginally bigger body but with EVF builtin, an extremely handy tilted screen with touch focus and same resolution as gx1. It's basically the same or even better than GX1!!
These "short & sharp" reviews are pretty amazing, they reallt live up to their name:
"A short, sharp review of the GX1, Panasonic's mirrorless system camera for the discerning enthusiast. Tested alongside the Sony NEX-5N to see which one comes out on top. View at 1080p to see sample shots at 1:1 pixel ratio."
Stuff-Review has made a nice little chart that pits the newcomer against the almost established crowd. That's all pretty theoretical though, since 3 of the 4 cameras are practically not available in the majority of the western world: