IMAX has released a new featurette for the upcoming prologue to The Dark Knight.

The clip features director Christopher Nolan and his director of photography Wally Pfister. In it they discuss the process of shooting scenes in the IMAX format. There are also short teasing shots from the prologue.

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The prologue is going to be attached to the IMAX viewings of the Will Smith-starring I Am Legend, which comes out on December 14, 2007.

The Dark Knight, which is the sequel to 2004's Batman Begins, stars Christian Bale, Morgan Freeman, Heath Ledger, Michael Caine and Gary Oldman. The Dark Knight swings into theatres on July 18, 2008. Watch the featurette below.