RE: [photo-3d] Twinning Pentax ZX-M: Need help

[Eddie Bowers <eddieb@xxxxxxxxxxxxx>]

Found this post from Wladyslaw Reksc on the subject

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The remote release terminal on that camera has the following 
pin assignment (from the top to bottom): ground, release, preset. 
To make sure the synchronization is perfect (if we can call it 
that way) first ground is connected to preset (camera electronics 
activates and exposure parameters are displayed in the viewfinder). 
This is what happens when the shutter release button is pressed 
half way. When the button is pressed harder ground signal is 
connected to the release pin and both shutters fire. You don't 
need to wary about that sequence - cameras will do it for us. 
The good news is that when you operate the button on one camera, 
those signals are passed via your home made cable to another 
camera, so there is no need for any additional external hardware. 

I bought the original remote release Pentax cable (used) so it 
was cheaper, but I use it only when taking pictures with long 
exposure times. 

Don't get intimidated by the proprietary shape 
of that connector. I went to buy a socked for a standard 14 pin 
integrated circuit with gold plated pins (the type with round 
opening - they provide the best contact). It costs around $3. 
I cut 3 pins out of it (buy the socket that has the middle of 
it opened; you may also ask for the same contacts being sold 
as just the row of 10 or 20). Then use a file to make the plastic 
a bit thinner, so it fits to the camera opening. Before you plug 
it in, solder the wires to it. The only problem with that quick 
solution is that to disconnect it, you need to pull by the wires. 
If you keep both cameras on the bar all the time, you may never need 
to remove that connector. 
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-Eddie
http://users.ticnet.com/view-master/