You simply can't get the 50p datastream on a 1.5Gbps HDI-SDI stream. 50p requires a dual link or 3G (as in 3Gbps) port. The monitor ports don't do this. Afterall, even if you're recording 50p you don't really require a 50p stream to monitor on set - only to record.
Got it; overcrank needs IF. This sounds like a good reason to spring for one soon. Do you find any IQ difference with the higher frame rate?

