We have synchronised pairs of A620 and A640 cameras for stereo shooting in flash and none-flash mode.
In flash-mode, a single flash exposes both camera images even when used at high shutter speeds.
Any number of cameras may be synchronised with tiny time-differences between them so it has uses other than stereo.
You can even introduce a time-delay of seconds before the synchronised exposures are made.
We still need to test the A610, A630, A710, s2is and s3is.
If you are able to obtain a pair of any of the above cameras and have time to do a quick, simple test, please email me at mybayauctions at btinternet.com.
Thanks.
David