Photokina 2002: EXCLUSIVE: Live from the show floor, just three hours after arriving at Photokina we have a set of exclusive pictures, which Olympus kindly allowed us to take, of a prototype 'Four Thirds System' D-SLR with a removable lens. This prototype is an early example of the design process and does look remarkably similar to an E-20 with the optional grip / battery pack. This prototype will appear behind glass on the Olympus stand throughout the show.