Re: twin camera synchronization

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxx>]

Tim Smith asks:

>Question for Dr T:  George...how fast are you able to sync your twin 
>Minoltas?  Are you using a mechanical or electronic release?

I am using electronic (electrical?) release cables... Allan Griffin, 
the great Australian stereo photographer and pioneer of high speed 
(action) twin SLR stereos, has written a series of articles in 
Stereoscopy on how to select cameras and check their synchronization... 
Even if you connect two cameras electrically, there is no guarantee 
that they will be well synchronized.  The criterion for "good 
synchronization" was set by Allan at achieving 1/500 s 80% of the 
time, I think... One way to increase the chances for achieving good 
synchronization is to select cameras with serial numbers close to each 
other.  

The Leonard brothers have published an article in PSA claiming
that they achieved perfect synchronization (1/1000 s) in mechanical
cameras using twin cable releases and relays.

George Themelis


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