With air-to-ground lightning strikes averaging under 10-seconds apart, this thunderstorm was awesome.
After dark, lightning becomes easy to photograph. Mount the camera to a tripod, frame a composition that includes the location with the most frequent lightning, focus to a long distance, set the aperture and ISO to control the lightning and overall image brightness, and then open the shutter long enough to catch at least one strike. Easy is to use 30-second exposures controlled by the camera (the strategy implemented for this example), but the Bulb setting controlled with a remote release enables the exposure timing to be adjusted as desired. For example, lock the remote release button down until there is a strike or the time duration exceeds the tolerance for long exposure noise.
Make safety a priority. Photographing lightning from a safe distance (far away) is advised. Locations with long distance visibility are advantaged in this regard, and the flat midwest prairie gets impressive thunderstorms.
Along with this storm came wind, wind strong enough create significant camera vibrations with even a sturdy tripod and strong enough to put a significant amount of dirt in the air. The solution to this issue was to drop down into the canyon a bit. The difference in wind speed 25 yards (25 m) down from rim was substantial and a solution to the problem.
Right, the title says four minutes, but a 30-second shutter speed was in use. This image is a four-minute exposure created by blending eight 30 second exposures using the "Lighten" layer blending option in Photoshop. This blending option is simple to use, allowing the lightning strikes from the layers below to show through.
A larger version of this image is available on Flickr.