Pre-PMA 2007: Panasonic has today announced the availability of a second Leica lens for the Four Thirds system (the lens itself was originally announced back in September at Photokina). The LEICA D SUMMILUX 25mm/F1.4 ASPH is a fast standard lens (equivalent to a 50mm lens on a 35mm camera) and promises superb image quality thanks to a large diameter aspherical lens and four ED elements.