It happens when at 11 at night you suddenly want to start taking photos. I can’t be bothered getting the tripod out so what do I do that’s not going to have camera shake, even with all the lights on. Aha! Photograph the lights. In black and white so I don’t have to worry about white balance (or do I? Mmmmm). The fruits of my labour in Monochrome II, but here’s an example: