3D Ponderings about - Sony DSC-QX10, DSC-QX30, DSC-QX100 and ILCE-QX1

Ok, I have never held a qx1 in my hands but after extensive research I think this is how it works. With the camera in single connection wifi you can connect it to a phone, or if you wish an LVR1 or LVR2 (the watch like remote Sony sells) you can adjust any and all settings on that particular camera. You can go to wifi settings, and then choose the other camera and log into it and then make whatever changes you want. The Sony Playmemories App does seems to support multiple cameras, BUT that appears to only apply to some actioncams.
Switch both cameras into the multi-cam wifi mode and you can log into both of them at once using the LVR2 (and I think LVR1) and you can toggle between both cameras pretty quickly, seeing the live feed on the little screen. When you hit record, both cameras take a picture. BUT you can make preciousl little other changes. Can't change ISO, WB, etc.
Annoying.
Anyway here is one way I think it could work. Use older mechanical lenses which require manual iris and focus. Set up camera in either full auto exposure and WB or pick your WB and auto shutter speed using your phone. Log out of that camera, log into the other. Match the settings. Switch cameras to multi cam wifi. Put your phone away and hope you picked good settings. Log into both cams using LVR2. Manually adjust iris to whatever stop you wish. Ideally shutter adjusts accordingly. Match iris on other lens. Toggle between views on LVR make sure looks mostly ok. Manually pick your focus. Match on other lens. Problem is you are looking at small screen to judge. When ready, take picture hitting rec/shutter button on LVR.
Alternate method. Modify a tethered shutter release (model escapes me at moment but connects via the USB.) Make it a Y connector and isolate the cameras from each other with electro optical bit to be safe. When you push the button you fire both shutters. Keep it connected. Log into one camera with your phone. Make setting changes. Log out, log into other camera. Match settings. LEAVE phone connected to 2nd camera and use it as monitor to judge focus and other elements. Match focus and iris on both camera lenses. Hope there isn't something you missed on the first camera. Trigger shutters with remote.
Makes my old medium Format Sputnik not look so fiddly after all.

Please anyone weigh in on practical experience that differs or have insight on how it might be easier.

One last thing- manual trigger port on cam body is not micro USB but Multi Terminal which has additional pinouts for focus and shutter. It should be possible to get two cables and wire it to a DPST (double pole single throw) switch to trigger both cameras simultaneously.

Did you measure the shutter-release synchronization accuracy?

From my experience, QX1 has somewhat unstable shutter delay - when using remote terminal.

Hi Turbguy am very interested in this project which you put together I have two QX10’s and one QX 100 s and I'm really keen Using them like you have to capture objects in 3-D. It would be really nice if you could help me out!

Kind regards Sam

I used to sync A5000 with QX1; it required delay timer for the former. The QX1 fires after some variable delay; the shortest usable shutter speed we achieved was 1/80sec.