
Safety First
When photographing lightning safety should be your first concern. I only photograph lightning when I can sit in the car while the camera is taking the photographs on a tripod near the car. Cars are a safe place in a lightning storm, be sure to keep the windows rolled up. Take lightning seriously, it is dangerous!
How to Take the Photos
I use a short telephoto lens 70 mm to extreme wide-angle 16mm. You should have a lot of sky in your image, because that’s where the lightning is. I always mount my camera on a tripod and use a remote release that is able to lock in the on position, (almost all of them do). Set the camera to aperture priority, F8 or F11, and let the shutter speed fall where it will.
Early morning and late evening are the best times to photograph lightning because shutter speeds are longer and you will not have to take as many photos. Use an empty large memory card and set the camera to continuous shooting mode. Start shooting using the lock on the remote release and get back into the car. If the camera fills up the memory card before it records a lightning strike delete all the images and start over. Since rain usually accompanies lightning a plastic bag comes in handy to protect the camera and lens.
A lightning trigger, which opens the shutter at the instant the lightning flashes is the easiest way to photograph lightning in daylight hours. I believe they cost around $300 and I have not yet tried one. A polarizing filter will enable you to take a little longer exposures during daylight hours without a lightning trigger.
Lightning Facts
A bolt of lightning can travel at speeds up to 140,000 mph and can reach temperatures of 54,000°F, (hot enough to turn sand into glass, known as fulgurites which can be found on Outer Banks beaches. A 15 foot long piece of fulgurite was found in Michigan.). 54,000° F is six times hotter than the surface of the sun.
There are close to 16 million lightning storms in the world every year.
Thunder is the sound of rapidly expanding gases along the heated lightning strike.
Lightning is actually not much thicker than a pencil.
Lightning can strike the same place twice.
Lightning strikes the earth with an electrical discharge of approximately 100 million volts.
North Carolina ranks in the top 10 of the most dangerous US states with 629 deaths and injuries.
A car traveling on I-35 near Des Moines, IA was struck directly by a bolt of lightning. The car stopped dead in its tracks, but the startled driver was none the worse for wear. The car had major electrical damage, many small holes in its body, and all four tires eventually went flat. The roadway beneath the car had a yard wide, several inch deep crater. The driver’s first name was Rod and the most enduring effect of the incident is that his friends now insist in calling him Lightning Rod.
A very good website for more interesting Lightning facts:
http://www.sky-fire.tv/index.cgi/lightning.html#whatis

Conclusion
It’s best to photograph lightning from further away, a place with a long and expansive view would be perfect. You have to take a lot of photos to get a good one, but it’s worth it. I took over 60 photos to get these two and it was a fierce storm. It surprises me how few lightning photos there are compared to how many times lightning has struck. Be safe out there and have fun.