For lightning the stroke will be over before the light activated shutter has time to fire, however the stroke is preceded by minor discharges that may be detected by radio. A better lightning stroke activation would therefore be a short wave radio with an output from the detector (or an electronic Schmitt trigger on the sound output). Use this to fire the shutter. Chris mailto:nimbo@ukonline.co.uk http://www.chrissdomain.com -----Original Message----- From: owner-photoforum@listserver.isc.rit.edu [mailto:owner-photoforum@listserver.isc.rit.edu]On Behalf Of Dave Buyens Sent: 03 December 2002 23:43 To: List for Photo/Imaging Educators - Professionals - Students Subject: RE: shutter release 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.
