Every wondered how the Sony Alpha series delivers a live view image from a very small sensor in the viewfinder housing without cropping, mimicking the field of view of the main CMOS, while enabling super fast phase detect AF at the same time? (Deep breath). Well, it seems Panasonic did wonder this, and plan to bring such innovations to a range of lenses previously not fully compatible with mirror-less bodies.
The adapter features electronics, a mirror system and phase detect AF chip. This allows auto-focus as well as full frame focal lengths with standard DSLR lenses on the Lumix G range.