This was taken on the spur of the moment when walking through Melbourne during the evening. I locked the exposure at what I thought would be roughly correct for the entire panorama and carefully turned around in a circle taking photographs.
It was putting the images together in Photoshop that took the time. Having spent a number of hours correcting, manipulating, and generally carefully merging the individual photos, I can definitely say that I will now always carry a tripod to make the whole process a lot easier. Though in a pinch, working with what you have has to work.