Isn’t that what they did for Star Trek TMP they scanned the VistaVision and 65mm neg at Higher than 4K resolution?
I’d love to see that for Star Wars without the DNR added at the end though. SW is standard 4 perf and 8 perf? No 65mm negative despite it being considered before the film was made. They selected VistaVision.
It doesn’t look like Star Trek was shot on 70mm at all, but they also used VistaVision for VFX yes.
The reason was because it was higher resolution and had finer grain, so when doing optical compositing and making a copy of a copy of a copy, the added grain wasn’t as bad.
Maybe if the budget was larger, Lucas would’ve shot everything on 70mm, but that was pretty uncommon between the 1960s and more recently when Quentin Tarantino and Christopher Nolan revived it.