Here's a capture of a few bolts including a fairly bright cloud-ground
and anvil or rocket cloud-cloud discharges. This was taken with a fish
eye lens with the image being flattened in Photoshop Lightroom. I also
removed a bolt from the right hand side to create a more balanced comp.
Kind of weird to be removing lightning bolts from an image. The sky glow
from the city was goofy in this capture so I converted to B&W instead.
This is a single 1 minute exposure, with a very slight crop for comp.

More lightning images can be found at http://www.pbase.com/pegsam/lightning