Okay kiddo, let me explain Computer-Generated Imagery (CGI) in movies and how it evolved over time in a way that you'll understand.
Let's go back in time to when movies were first made. They were filmed using cameras and actors with costumes and makeup to create the illusion of different worlds and characters. However, there were some things that couldn't be captured easily on the screen, like monsters, explosive action scenes, magical spells, and some impossible stunts. That's where CGI comes in.
In the early days, computers were not as powerful and fast as they are today, so CGI was very limited. In the 1970s and 1980s, filmmakers started experimenting with basic CGI effects like wire-frame models and simple animations. For example, in the movie "Star Wars: Episode IV - A New Hope" (1977), they used CGI to create the targeting computer display in the X-wing fighters. It was cool but still rudimentary.
As technology improved, CGI became more sophisticated and realistic. In the 1990s, movies like "Jurassic Park" (1993) and "Terminator 2: Judgment Day" (1991) wowed audiences with their realistic-looking dinosaurs and liquid-metal villains. They used CGI to bring these creatures to life and create mind-blowing action scenes that were impossible to achieve with practical effects alone.
During the 2000s, CGI became an essential part of blockbusters and superhero movies. Think of movies like "Spider-Man" (2002) and "The Lord of the Rings" trilogy (2001-2003) that used CGI to create breathtaking battles and creatures. This was also the era of motion-capture technology, which allowed actors like Andy Serkis to play roles like Gollum in "The Lord of the Rings" and Caesar in "Rise of the Planet of the Apes" (2011). They wore special suits with sensors that captured their movements and expressions, which were then turned into CGI characters.
Today, CGI is everywhere in movies, from subtle enhancements to full-on CGI characters and environments. Movies like "Avengers: Endgame" (2019) and "The Lion King" (2019) use CGI to create epic battles and photorealistic animals. Plus, with the rise of virtual production, filmmakers can now use real-time CGI to shoot scenes in a virtual environment, which saves time and money while offering more creative freedom.
In short, CGI has come a long way from its humble beginnings and has transformed the way movies are made and seen. It helps filmmakers bring their imagination to life and create awe-inspiring worlds and characters.