Short video showing one of the easier fixes being done for ANH:R HD, thanks to the 4k77 35mm scan. Although the video shows just one of the shots which solely uses the 4k77 scan, the others (flying droid and the Ronto in the background) use a mixture of the 4k77 combined with the Blu-Ray, which were a lot more complicated because of lots of rotoscoping and matching the grading to each element.
https://www.facebook.com/swrevisited/videos/2208559306067135/