It is spotted on the field, the new Sony full frame a900 and a 16-35mm F2.8 lens. If this is not a900, this must be another model. Looking at the photos, the size of the 16-35mm F2.8 lens is similar to Nikon and Canon's 16-35mm F2.8.
Sony Alpha a900 and 16-30mm F2.8 Top View
Sony Alpha a900 and 16-30mm F2.8 Spotted
Sony Alpha a900 and 16-30mm F2.8 Spotted
You may be interested with Sony's Super Steady Shot Demonstration:
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