CES 2012: Panasonic is showing mockups of two large-aperture zoom lenses for Micro Four Thirds. The Panasonic stand plays host to mockups of a 12-35mm F2.8 and a 35-100mm F2.8 lens, prominently badged 'Concept' lenses. Next to the models is a lens roadmap confirming the company's intentions to build a 12-35mm (24-70mm equiv) and 35-100 (70-200mm equiv) 'X' grade zooms, but with a note that the maximum apertures are 'to be determined.' The diagram appears to suggest both lenses will arrive later in 2012.

Panasonic Lumix Vario X 12-35mm F2.8 and 35-100mm F2.8 mockups