After Canon C100 Canon is upgrading C300 Cinema camera with Dual Pixel AF sensor.
Canon EOS C300 have Dual pixel AF CMOS Fullframe Sensor inside (see how dual pixel AF work) and you can upgrade your C300 camera by visiting nearest service center.
By enabling Dual pixel AF you get fast and more accurate AF, the camera now also offer Continuous AF (Autofocus) Function for all Canon EF autofocus Lenses, for more details see the press release.
But the upgrade is not free and Canon USA will perform this feature upgrade at a cost of $500, and will require that EOS C300 cameras be sent to an accredited Canon service center.
Canon EOS C300 Press Release:
Available soon from Canon will be an accredited Canon service center installed feature upgrade for the EOS C300 Digital Video Camera that will offer an autofocus mode to help ensure sharp focus and smooth focus transitions. The upgrade provides a new Continuous AF (Autofocus) Function for all Canon EF autofocus Lenses, using Dual Pixel CMOS AF technology. A new AF Lock setting also lets you change the image framing while holding the desired focus. These critical focusing capabilities are designed to help reduce out of focus video while providing for smooth focus transitions and assist users when operating with small crews.
The accredited Canon service center installed feature upgrade for the EOS C300 camera is targeted at users who regularly shoot with smaller crews, who shoot moving subjects, or who want smoother, more natural-looking autofocus. Specific markets include documentary filmmakers, electronic news gathering, sports productions, weddings and similar special events, nature and wildlife, and many others.