Avatar (2009 film) themselves to change into a Na'vi. "Avatar: A Confidential Report on the Biological and Social History of Pandora", a 224-page book in the form of a field guide to the film's fictional setting of the planet of Pandora, was released by Harper Entertainment on , 2009. It is presented as a compilation of data collected by the humans about Pandora and the life on it, written by Maria Wilhelm and Dirk Mathison. HarperFestival also released Wilhelm's 48-page "James Cameron's Avatar: The Reusable Scrapbook" for children. "The Art of Avatar" was released on , 2009, by Abrams Books. The book features
Avatar (2009 film) designers, and two separate art departments, one of which focused on the flora and fauna of Pandora, and another that created human machines and human factors. In , Cameron was announced to be using his own Reality Camera System to film in 3-D. The system would use two high-definition cameras in a single camera body to create depth perception. While these preparations were underway, Fox kept wavering in its commitment to "Avatar" because of its painful experience with cost overruns and delays on Cameron's previous picture, "Titanic", even though Cameron rewrote the script to combine several characters together and offered