Upload & Sell: Off
It appears to be the same lens as in the Olympus XZ1/2. As an owner of the XZ1, I'm not impressed by the lens, which is quite soft towards the edges at the wider end. It gets better stopped down, but the nature of these cameras, when in auto mode, is to keep ISO low and shoot at or near wide open as much as possible.
Still waiting for Ricoh to either upsize the GRD's sensor or update the GXR...