Photokina took place in Cologne from September 18-23. The theme, for me, was full-frame format: 24 x 36 mm, some in bodies lighter and smaller than their APS-C predecessors.

Leica introduced the new M, with Leica-designed 24-megapixel CMOS sensor, live view, HD video and compatibility with all previous M rangefinder lenses.

Canon’s new 6D has a 20.2 megapixel CMOS sensor. Body-only weighs 24 oz and it measures 5.7 x 4.4 x 2.8 inches.

• By way of comparison, Canon’s 22.3-megapixel 5D Mk III is 30.3 oz and 6.0 x 4.6 x 3.0 in. (w-h-d)
• and Canon’s APS-C 18-megapixel 7D is 28.9 oz and 5.8 x 4.4 x 2.9 in.

Nikon’s new full-frame D600 weighs 26.8 oz and is 5.6 x 4.4 x 3.2 in.

• The 36-megapixel D800 weighs 31.7 oz and is 5.7 x 4.8 x 3.2 in.
• The 16.2-megapixel APS-C D7000 weighs 24.3 oz and is 5.2 x 4.1 x 3.0 in.

Sony showed a prototype RX1 camera under glass: 35mm full-frame 24.3-megapixel “pocket camera” with fixed f/2 35 mm Carl Zeiss lens. 17 oz and 4 1/2 x 2 5/8 x 2 3/4 in.

Sony also introduced a full-frame 24×36 format interchangeable lens consumer video camera: NEX-VG900. It has a 24.3-megapixel CMOS sensor capable of shooting 24 MP stills.

The adventure continues on October 25-27 in New York at PhotoPlus Expo.