Australian Prime Minister Julia Gillard traveled to Beijing this week, for a two-day visit aimed at broadening relations between the two countries. During the trip, Gillard spent some time meeting with her Chinese counterpart, Premier Wen Jiabao.  You may have seen the video from a ceremony where the two came together.  But capturing those images was more of a challenge than you might think.  CNN Beijing producer Jo Kent and photographer Brad Olson take us behind the scenes, to see what goes into getting such an important shot.