Nikon's D600 full-frame DSLR seemed poised to undercut its arch nemesis Canon in the prosumer market - until now. The Canon EOS 6D ($2,100) is Canon's smallest, lightest (only 24 ounces) and cheapest full-frame DSLR ever.

Canon has unveiled its latest camera models at Photokina in Cologne, Germany including the lightweight DSLR EOS 6D and the PowerShot G15 advanced compact. Photokina is the world's largest trade show for the photographic and imaging industries and is held every two years.