There are several brands of digital SLR cameras that support the four thirds image format. They include Olympus, Panasonic Lumix , Leica Digilux, and others. The same guys behind the DPNow site launched the fourthirds-users.com for four thirds enthusiasts. Go visit this new site and also check out their FAQ section if you are curious. If you are interested, you may also want to read about why four thirds systems are better than the traditional aspect ratio (3/2) systems.