One more composite:
http://dl.dropbox.com/u/13644418/iis...ite7-Large.jpg
These are single 5 sec frames:
http://dl.dropbox.com/u/13644418/iis...orm1-Large.jpg
http://dl.dropbox.com/u/13644418/iis...orm2-Large.jpg
I've also attached an unedited, straight-out-of-camera frame (5 sec, f/5.6, ISO 800, 24 mm). There was a lightning strike every 5 - 10 secs... which was particularly scary being in the middle of the storm and seeing them literally in every direction - including directly above me!
By the way, the red/pink colours are real. Inside the storm itself, everything was clearly red/pink to the naked eye, but after it had passed it returned back to the normal white/grey colours.