FORT LOGAN - HOW IT WAS MADE

In the above example the street lights were far away enough that I knew I could make exposures in the 30 second to the 5 minute range without the streetlights in the bottom of the picture changing the look of the photo very much. Also because it was well after dark I knew there was no danger of ambient light in the sky overexposing the film. I opened my lens aperture to f/4 hoping to record highly detailed lightning strikes. Then I simply opened the shutter until I saw one or two lightning strikes in the area where I had pointed my camera, then I closed the shutter and went on to expose the next frame of film. I was able to make a series of images, most of which had an acceptable range of exposure.