I believe there are three possibilities here:
1) It's an upscale from the 2K DI.
2) It's a new 4K scan of the film-out from the original 2K DI.
3) The studio went back to the negative and built a new 4K DI.
If I'm not mistaken, #3 often requires rebuilding the entire feature. Because the movie...
Wasn't this a 2K DI movie? Did Warner redo the DI, or is this just a rescan of the film-out?
I recall giving the Blu-ray and HD DVD high marks at the time they came out, but thinking back I also remember them having visible edge ringing and other digital artifacts, and I suspect they probably...