Take a look at the Canon 5D Mk II Wedding sample video on the Canon site and look at the lens list. The even had to reach back to a super wide FD (pre EOS) lens with the Canon adaptor (Long out of production) to get wide enough. That is shooting FULL FRAME. I don't think the Scarlet Koolaid drinkers know what every dSLR owner knows, that is a little thing called crop factor. Scarlet with less than a 35mm sensor and a SLR lenses is going to have crop issues trying to go wide.

Wonderful concept but where is the market for content greater than 1080P ?