Panasonic Lumix DMC-G1 reviewed by digitalcamerareview

As the first production Micro Four Thirds camera, the G1 represents both a revolutionary product and a fundamentally new overarching technology. Using interchangeable lenses, a large sensor, and a traditional shutter mechanism, but no mirror or optical viewfinder, the G1 is part DSLR and part point-and-shoot. The obvious concern with this "hybrid" design approach is that the resulting device will simultaneously compromise the best aspects of both point-and-shoots and SLRs: in trying to be a jack of all trades, as the saying goes, the G1 runs the risk of ending up a master of none. If the road to a final version of the G1 was paved with potential trouble spots, however, Panasonic seems to have successfully steered a course to a polished camera that feels, in our experience with the device, anything but cobbled together.

Read the full review here.

Panasonic Lumix DMC-G1 12.1MP Digital Camera with Lumix G Vario 14-45 mm f/3.5-5.6 ASPH Mega OIS Lens (Blue)

The LUMIX G1 is as easy to use as a compact digital camera,
with the stunning photo quality of a digital SLR camera. It's a new-generation digital interchangeable lens camera that does away
with the mirror box and complies with the new Micro Four Thirds System standard. In short, the G1 writes an entirely new chapter in the evolution of the digital interchangeable lens camera.

Full-time Live View shows you before you shoot how the settings change the photo
The G1's Full-time Live View is revolutionary. It lets you see in
the LCD how adjusting the exposure, white balance, aperture and
even the shutter speed will affect the photo. This kind of super-easy
live view shooting has never before been possible with a
conventional digital SLR camera.

Micro Four Thirds: The open standard that led to the mirror-less body
The G1 adopts the Micro Four Thirds System standard, developed as
an extended version of the Four Thirds System standard for digital
camera systems. Using this standard, and developing a camera
body that eliminates the mirror box and optical viewfinder unit,
we managed to reduce the lens mount diameter by about 6 mm
(compared with the conventional Four Thirds camera) and shorten
the flange-back distance* by about half. The result is a digital
interchangeable lens camera that's both extremely compact and
highly mobile.

Check full specifications and more details at the Panasonic Lumix DMC-G1 product page.