I recently photographed a couple of runway shows on the roof of the Hotel Valley Ho in Scottsdale. I got there early to stake out a spot from which to shoot and had some time to kill before the shows began. The roof was dimly lit, but here and there you could find little splashes of light, so I dug out my fastest lens – a 50mm f/1.4, which photojournalists say can see in the dark – and wandered around the pre-show party looking for interesting images. I especially liked the blue LED lighting the producers used to set the mood.