| Standing stones at Carnac, Brittany, France: Brandenburg set up a tripod on a ladder atop a camper van to shoot over a fence and used a searchlight to paint the stones with light. Canon EOS 5D with 24-70mm f/2.8L Canon EF lens. Exposure, 200 sec at f/6.3, ISO 100.|
He usually shoots with the lens wide open or stopped down a little. The shortest exposures will last a few seconds at ISO 400; longer ones may last several minutes. His star trails take hours (see How I Shot This, April 2007). Remember that clear moonlight is surprisingly bright, and cloud cover surprisingly dark. Focus manually and tape the focus ring in place to keep it from shifting.