The editing resolution for "Zodiac" was DVCPRO HD 100. To a test audience, carefully created DVCPRO HD 100 can look good enough to be indistinguishable from uncompressed images. This is especially impressive when you consider that this working resolution has 1/14th of the uncompressed bandwidth requirements.
The actual creation of the DVCPRO HD 100 quicktimes happened via system-generated shake scripts. The compression ratio 14 allowed the entire 208 hours of dailies to be online at once.