Throwing these in here for the sake of it, many people have probably never seen these before and they confirm a lot about 0079's production. All come from Sunrise and were used internally (I don't know the film format, but its very typical of some others I've run across)

Possibly used by Sotsu to send off to publishers, but there is no info otherwise:

https://e-hentai.org/g/3119992/8e5f7ddc95/
https://archive.org/details/mobile-suit-gundam-film-scans/ (for direct DL as a ZIP).

All are 600 DPI