has posted this quick but good comparison of the Canon C100 Mark I and Mark II:
A very unscientific test comparing the picture output by these cameras at various iso settings under tungsten light. Straight out the camera, they don’t match. Even after auto black balancing the differences are still there.
The picture quality of the MK II is pretty obvious however.
Also a short comparison of AVCHD vs MP4 in the C100 Mk II.
Original file available to download.