Yes, but the 1DC is something of a chimera.
s35 has long been the base format for film shooting, which is closer to aps-c size (35mm film, but runs vertically as opposed to horizontally, so the height of a 35mm still frame becomes roughly the width of a 35mm movie frame. Smaller image circle.
Look at the c100, 300 and 500. All s35 sensors. Not so called full frame. Full frame is a nothing term. s35 is full frame, just the orientation of the film is different.