Richard, I used a device activated by sound to trigger a remote camera at Cape Canaveral to photograph Space Shuttle launches. It used a conventional sound decibel meter from Radio Shack and a relay to trigger the camera. For lightning, I would check out: http://www.lightningtrigger.com/ Dave Buyens Richard Cooper wrote: Is anybody using a shutter release device that is activated by either light or sound. If a camera has a port for a wired remote shutter release device, then a specialized remote wired device activated by lightning for example would trigger the shutter.
