Completely NEW Canon designed full-frame back-illuminated stacked CMOS 45MP sensor. Fast sensor read-out speeds allow for up to 30 fps electronic shutter performance. New focus system upgrades include eye control focus, and the ability to maintain focus on a subject even when obscured briefly. Capture video and stills simultaneously with no interruption. Action Priority uses data to interpret the scene and predict the main subject to lock focus on it in action scenarios.