ChainsawAsh said:
I believe they used a separation master for The Wizard of Oz, too, and that looks pretty fantastic.
Wizard of Oz was shot in 3-strip Technicolor and was restored using the 3-strip original negatives. It is essentially the same technology as the 3-strip separation masters for Star Wars, except this is how the negative to Wizard of Oz was shot rather than the duplicate negative for Star Wars.