In an interview with The Coventry Telegraph, director Martin Campbell discusses the challenges he'll be facing in terms of the visual effects for Green Lantern. "It's daunting," he said. "Just the process, something like 1,300 visual effects shows, it's mind-blowing, quite hoenstly. A lof of the special effects shots work will concentrate on the Green Lantern power ring. It's energized by a batter on the planet Oa, which taps into the willpower of everyone in the universe. From that ring you can form constructs. So if you got into a fight, you could form a giant fist or a fighter plane."
In the same article he discussed the appeal of shooting the film in New Orleans, with production beginning in April. He also sang the virtues of GL being different from other superhero characters: "He's the only superhero to my knowledge who regularly goes to another planet. Superman and Batman were essentially locked into a particular city. The Lantern isn't so Earthbound."