Although much of the buzz this year has been about small, mirrorless cameras, the big-boy DSLR makers (Nikon and Canon) haven’t been entirely asleep at the switch. The new Canon 70D is most notable for it’s groundbreaking Dual Pixel CMOS autofocus sensor, which is used in video and Live View modes. The Canon 70D and an explanation of autofocus technologies are the topics of this episode of All About the Gear.