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From: "Dave Fenner"
Subject: Re: Camera Flashes
Date: Wed, 4 Dec 2002 00:29:46 -0000
NNTP-Posting-Date: 4 Dec 2002 00:30:49 GMT
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
"Gregory L. Hansen" wrote in
| In article <firstname.lastname@example.org>,
| John Muchow wrote:
| >>>>Well, all the camera will see is a nine volt battery feeding
the gates of
| >>>>some FETS.
|| The flash really is triggered by shorting the PC cable, right? I
| it by shorting the connector, and it works fine when the PC cable
is in my
| camera, but if I manually short the end of the cable nothing
| really don't know why.
I think this may be why. Some sophisticated camera/flash systems
curtail the flash when enough light from the subject has returned to
the exposure sensor *in the camera*. Since there is only one wire,
this 'enough' signal must be sent to the flash unit on this same
wire, and the only way that can be done is for the camera to itself
close the circuit when film is cooked. So if you short the leads
the connection remain you are telling the flash to switch on for
zero time! You could possibly try a fleeting brush of the wires to
check this out.
BTW I still think best and cheapest way to solve your problem is
slave triggers. Knock some up for pennies each.
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