Panasonic has made the biggest news of Photokina so far with the announcement of its new Lumix CM1 Android smartphone. The Japanese company quit making smartphones after the failure of its Eluga handsets two years ago, but now its returning with an imaging-focused device thats as much camera as it is phone. The CM1 comes with a 1-inch sensor that dwarfs most imaging sensors in smartphones today and is on a par with what youd find inside Sonys RX100 and Nikons 1 Series of cameras. It has a 20-megapixel resolution and is paired with an f/2. …