Re: [photo-3d] Re: lightning trigger

[drdave@xxxxxxxxxx]

Ron Beck writes:

> Still, there ought to be a way to trigger a camera with a light-
> sensingdevice.  A good way to test would be to use a strobe and 
> see if the device could capture the flash.  I'm going to keep
>looking!  This conversation has stirred my investigative instincts.

I use very sensitive slaves for my cave photography that work off of 
infra red light. I have seen set ups where flashes with slaves were 
setup down a passage so that the first fired the second fired the 
third, etc. The entire lenth of passage was hundreds of feet long. All 
the flashes were caught on the film at 1/100th shutter speed. The range 
on just one of the "FireFly" brand slaves that I use is claimed to be 
1500' so the first one could effectively be triggering the last one.

Anyway, I have never tried them on lightning. I will bring them with me 
to Mesa and the NSA Convention and give it a try. After all this is 
summer storm time in the southwest and we should be guaranteed at least 
one good lightning storm the week we are there.

If this test works (by firing a flash attached to it) it wouldn't be 
too hard to attach a camera triggering device if you have an electronic 
shutter and only a little more difficult if a selenoid needs to be 
incorporated for a manual shutter release.

That's all for now,

David W. Kesner
Boise, Idaho, USA
drdave@xxxxxxxxxx