It is not since long that the Dual-Pixel CMOS AF unblocking firmware update for the C100 (Adorama | B&H) and C300 (B&H | Adorama) is available to the public, and Newsshooter reader Frank Redward already tested this feature and made a video about it.
The AF speed is so quick it puts the Panasonic GH2 and GH3 to shame.
I expected single-shot AF to work well. What I didn’t expect was that tracking focus is now quite possible and reliable. When subjects move past the camera you can maintain focus. Focus can also be held while zooming with lenses that are not Parfocal. This makes the whole experience of using stills zooms more similar to an ENG lens – all through the wonders of DUAL Pixel CMOS AF. DSLR lenses were never designed to work like this but it works because the Dual Pixel CMOS AF is just so fast.
Canon’s Dual Pixel CMOS AF is fantastic and works for me. It’s not 100% perfect but compared to what else is around it is amazing. It turns the C100 into a powerful real world shooting work horse. As an operator it adds a level of security and speed that’s very reassuring.