UPDATE: Shane now seems to say it vignettes at 8-12mm. Take all this with a pinch of salt until he makes his mind up
Usually most Super 16mm cinema glass won’t cover the larger sensor in the Blackmagic Cinema Camera. The sensor is closer in size to the Panasonic GH3. However Shane Hurlbut has had a rather useful discovery, in shooting with the Canon 8-64mm F2.4 on the BMCC he found it covers the sensor just fine without vignetting.