Here's a link to the specs page...
http://blackmagic-design.com/products/blackmagiccinemacamera/techspecs/
Disappointing at this point is the sensor size....wikipedia says that APS-C sensors: "...APS-C variants are considerably smaller than 35 mm standard film which measures 36×24 mm. Sensor sizes range from 20.7×13.8 mm to 28.7×19.1 mm"
The specs for the BlackMagic camera say:
Sensor Size 16.64 mm x 14.04 mm
Active Sensor Size 15.6 mm x 8.8 mm
So let's see how this impacts low light performance
Steve Crow
Crow Digital Media
http://www.CrowDigitalMedia.com