Lord of the Rings Trilogy. Gollum is by far among the eeriest CGI creations, and his look and feel in the Lord of the Rings Trilogy had been made possible by the Chroma Key. The creature’s realistic routines had been captured via chroma key technology, which you can get from green screen studio rentals. Furthermore, the elegance of the Shire as well as other parts of the Lord of the Rings universe will not captured by simply producing life sized models. That is where the green screen comes in. It digitally created backgrounds which were put into the movie for just a more authentic feel. This made the motion picture all the more precious.