[Pat Bray]"HD DATA as DPX, Tiff or Targa Sequence, prepared with the correct ratios for cinema projection (I believe they are shooting, 2.40:1)"
As I'm sure you've noticed -- this is not a very specific spec!
I'd ask what exact pixel dimensions they expect you to deliver. I'm not clear if HD is supposed to stand for high-definition or hard drive.
If you deliver DPX, you should find out whether they expect log or lin DPX files. If you deliver TIFF, you should find out whether they expect 8 or 16 bit TIFF. Targa is 8-bit only, so that one is pretty straightforward once you know the resolution -- but if the system can handle the additional depth, you could work in 16bpc in AE and deliver DPX or 16-bit TIFF.
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