with a budget of US$15–20 million, similar to Jabberwocky or Excalibur. The project eventually went into turnaround after the option expired, to which the rights returned to Avary, who went on to direct an adaptation of The Rules of Attraction. In January 2005, producer Steve Bing, at the behest of Zemeckis who was wanting to direct the film himself, revived the production by convincing Avary that Zemeckis' vision, supported by the strength of digitally enhanced live-action, was worth relinquishing the directorial reins. Zemeckis did not like the poem, but enjoyed reading the screenplay. Because of the expanded budget, Zemeckis told the screenwriters to rewrite their script, because "there is nothing that you could write that would cost me more than a million dollars per minute to film. Go wild!" In particular, the entire fight with the dragon was rewritten from a talky confrontation to a battle spanning the cliffs and the sea. Animation and visual effects Zemeckis drew inspiration for the visual-effects of Beowulf from experience with The Polar Express, which uses motion-capture technology to create three-dimensional CGI images of characters. Appointing Jerome Chen, whom Zemeckis worked with on The Polar Express, the two decided to chart realism as their foremost goal. Animation supervisor Kenn MacDonald explained that Zemeckis used motion capture because "Even though it feels like live-action, there were a lot of shots where Bob cut loose. Amazing shots. Impossible with live-action actors. This method of filmmaking gives him freedom and complete control. He doesn't have to worry about lighting. The actors don't have to hit marks. They don't have to know where the camera is. It's pure performance." A 25 × 35-foot stage was built, and it used 244 Vicon MX40 cameras. Actors on set wore seventy eight body markers. The cameras recorded real-time footage of the performances, shots which Zemeckis reviewed. The director then used a virtual-camera to choose camera angles from the footage which was edited together. Two teams of animators worked on the film, with one group working on replicating the facial performances, the other working on body movement. The animators said they worked very closely on replicating the human characters, but the character of Grendel had to be almost reworked, because he is a monster, not human. Over 450 graphic designers were chosen for the project, the largest team ever assembled for a Sony Pictures Imageworks-produced movie as of 2007. Designers at Imageworks