Auction house Christie’s is preparing to auction off the camera used by photographer Douglas Kirkland to shoot some of the most recognizable images of Marilyn Monroe. In honor of this impressive lot, they’ve put together a retrospective that takes you behind the scenes of this iconic and intimate photo shoot. “It was really Marilyn Monroe and this Hasselblad that started my career,” says Kirkland in the video. He was just 27 years old at the time, but had already started…