Most people know that not everything you see in a movie or TV show is actually real. Some productions, especially in the sci-fi genre, use a heavy amount of CGI. In order to create a particular spectacle, they use a technique called chroma keying.
Chroma keying layers images on top of another to create a new image. The way that this is set up is through the use of a green screen. This lets filmmakers create visuals such as space battles and alien worlds without actually having to build them. Here are 35 green screen photos that show how Hollywood really works.
5Harry Potter and the Half-Blood Prince
Harry Potter was already massively popular as a book series when they began being adapted into films. They made a total of eight films that ended in Harry Potter and the Deathly Hallows Part 2 in 2011. There were plenty of opportunities for green screen implementation throughout the film series.
This photo is from the filming of Harry Potter and the Half-Blood Prince, based on the sixth novel by British writer J. K. Rowling. Hermione, played by Emma Watson, is taking books from green screen-wrapped hands. This is how the books are made to look like they’re being suspended in midair after special effects come in.
