Lightning hits the Boulder Flatirons. I took about twenty images of
the storm, and got lucky with this one- most of the rest were
unremarkable. I used a fairly short exposure so the lit-up buildings
wouldn't overwhelm the lightning, whose brightness, unlike the
buildings, is of course independent of the camera exposure time.

11:00pm, June 1st 2005
6 seconds, f3.2, ISO 50, focal length 7.2 mm
Cropped, brightend, subsampled.