Yesterday, the Sony NEX-C3 was the world's smallest interchangeable lens digital camera. It's not anymore. That title now belongs to the Pentax Q. To achieve the camera's incredibly small body size, Pentax had to shrink the sensor as well, making the Q not only the world's smallest Interchangeable Lens Camera (ILC), but also the cam with the world's smallest sensor in an ILC. The Q uses a 12.4 megapixel, 1/2.3-inch backlit CMOS image sensor, manufactured by Sony -- significantly smaller than the 4/3 and APS-C sensors used in Micro Four Thirds and Sony NEX-series cameras, respectively. As image qualit