From: "Matt Haber" <solstice@xxxxxxx>
Subject: [OM] Will this work?
I'd like to run a two camera setup for an upcoming shoot, and had an
idea about how to do it, but now i'm wondering if it will work at
all.
It's a studio shoot, so I'll be running strobes...
First, make sure your film is slow enough (or you are stopped down
enough) so one camera can be set significantly slower than 1/60th
without getting fogged. I'd think a film/aperture that would work for
1 second would be okay.
You can slave two Winders or motor drives by isolating them with
diodes. Tie the ring terminal together, then tie a single switch to
two diodes, each "pointing at" one of the tip terminals.
Set the non-flash camera to 1/30th or so, at the same aperture as the
camera controlling the flash.
Now both shutters should open within milliseconds of each other, and
the slave camera should receive the same exposure value as the master
camera.
It may well be that one camera is a bit slower than the other -- it
would be good to find that out ahead of time. The flash fires when
the first curtain is fully open -- if this happens before the slave
camera is fully open, there may be an unexposed strip on the right
edge of each frame. You may be able to check this by looking the
shutter of the slave with the back open and a shroud over you. (The
client will be impressed... :-)
If one camera is slower, simply swap them, firing the flash from the
slower camera.
Also, a simple electronic circuit (monostable multivibrator) could be
cobbled together for a few bucks that would delay the master camera
for perhaps 9mS, therefore ensuring the slave shutter will be open
when the flash fires.
Caveat: I have not actually tried this, but I think it has a better
chance of working than what you proposed.
: Jan Steinman <mailto:jans@xxxxxxxxxxx>
: 19280 Rydman Court, West Linn, OR 97068-1331 USA
: +1.503.635.3229
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