Purely History on Instagram: "Before CGI existed, the 1948 Superman movie relied entirely on practical filmmaking techniques to portray a superhero on screen. This was the first live action Superman serial, starring Kirk Alyn, and it faced the challenge of showing powers like flight at a time when visual effects were extremely limited. To solve this, filmmakers used a mix of wire work, camera tricks, miniatures, and optical effects. For flying scenes in particular, live action footage was often