https://www.comingsoon.net/tv/news/1163557-hd-version-of-sex-and-the-city-hbo-max

Subscribers can watch the iconic HBO comedy in a whole new way. Sex and the City originally aired in standard definition, but HBO Max used the film negatives from the show to create new HD masters (https://www.youtube.com/watch?v=wQN-uyEyuwY).