Canon has produced the world's largest CMOS sensor 202 mm x 205 mm Low light performance is pretty good: *"Because the increased size of the new CMOS sensor allows more light to be gathered, it enables shooting in low-light environments. The sensor makes possible the image capture in one one-hundredth the amount of light required by a 35 mm full-frame CMOS sensor, facilitating the shooting of 60 frame-per-second video with a mere 0.3 lux of illumination."* http://blog.digitalrev.com/2010/08/31/canon-has-developed-worlds-largest-cmos-sensor/