Photo taken during a New Year's Eve 2011 party in San Francisco.

This abstract pattern that looks like an explosion of colors is created by the stobing and color-morphing lights on a DJ platform and on the people dancing in front of it, captured in long exposure.

During the 4 sec exposure, I rotated the camera a full 360 degres around the lens axis (i did that by hand, holding the camera above my head, so the rotating was very approximate). The focus was adjusted manually.