This Is Cinerama is a film I always wanted to see for decades. I bought the BD release from 2017. With this release they scanned the camera negatives and it looks just great on my Sony X900F. It looks like it was shot, yesterday. Some of the footage reminds me of scenes from two later films, Koyaanisqatsi and Chronos...

https://en.wikipedia.org/wiki/This_Is_Cinerama

https://www.imdb.com/title/tt0045231/

This is one that I have, remastered in "smile-box" format. I was a bit skeptical at first, but it really does look good on a flat screen. I can also highly recommend "How the West Was Won."