Computer Generated Imagery (CGI) is a technology used to create or enhance visual elements in films with the help of computers. When people ask what is CGI in movies, they are referring to the digital process of designing scenes, characters, objects, and special effects that are difficult or unsafe to capture with real cameras. Computer generated imagery in film is commonly used for explosions, fantasy creatures, large crowds, space scenes, and futuristic environments. In a CGI film, these computer-made visuals are either fully digital or combined with live-action footage to look natural and realistic. CGI allows filmmakers to control lighting, movement, and details, making scenes more visually consistent and engaging. It also helps reduce production risks and costs for complex scenes. Conclusion: In simple terms, Computer Generated Imagery plays a key role in modern filmmaking by expanding creative possibilities. Computer generated imagery in film helps directors turn imagination into believable visuals, making movies more impactful and visually appealing.