Of memory, all scenes of TPM were analogically filmed with Arriflex lenses except for one scene shooted directly in HDCAM.

90% of the film was processed digitally, which leaves still 10% of “natural” scenes, but the entire film was processed through a Digital Intermediate at 2K (but Poita’s remark is quite relevant).
Eventually, there were 2 final masters : one Kodak 35mm and one TI at 1280x1024.

The first LD/DVD/HDTV master was made from InterPositive ; the last BR master was made with a new scan directly from the 35mm master, fully scene by scene color-regraded.

On the other hand, AOTC and ROTS were digitally filmed with Sony cams at 2K.

I’ll try to find the exact information tonight.