SFX, or special effects, refers to techniques used in film, television, and theater to create illusions or enhance storytelling. These effects can be practical, such as using props or makeup, or digital, involving computer-generated imagery (CGI). SFX helps to bring imaginative worlds and scenarios to life, making them more engaging for the audience. In the film industry, SFX plays a crucial role in genres like science fiction, fantasy, and horror. Famous examples include the use of animatronics in Jurassic Park and the digital effects in Avatar. By combining creativity and technology, SFX contributes significantly to the overall visual experience of a production.