The improved dynamic range is not due to the chroma interpolation (which doesn't hurt either), it is due to the source YUV source range being non-standard with NeoScene fixes (see my previous post.)

Thanks for pointing that out David, my tech knowledge of codecs is clearly not as good as yours :)

Mauricio

Here is a post on my blog on Cineform for the 7D:
Cineform for 7D | _mxr blog (http://blog.mxr.at/cineform-for-7d/)

Best,
Chris