Here are photos of my landscape configured Twin Samsung NX500 Camera 3D Stereo Rig mounted on a tripod. (I also have a portrait configured rig I describe in a blog post here.) The left eye camera is mounted upside down to get the smallest possible camera separation distance. The rig has an inter-axial camera lens separation of 86 mm with the camera strap lugs not cut off, otherwise I could have had a separation of 82 mm inter-axial.
The cameras are mounted on a 3D printed support I devised in a Z-bar format and had Shapeways.com manufacture the support in rigid plastic. A large painter's sanding paper handle holds the support mount for comfort. The whole rig weighs about 3 lbs with 16 mm fixed lens and UV protection filter.
The Sony Z1S smart-phone runs a Remote Capture app (Android) that sends broadcast shutter control commands over the phone's WiFi Hot-spot local network to the firmware modified NX500 cameras.
The pictured Bluetooth remote shutter device sends key presses for focus and shutter commands to the app that then sends the WiFi broadcast commands to the cameras. To my knowledge it is not possible to use the Bluetooth controller directly to control the NX500 camera without a firmware modification. If Bluetooth shutter remote was possible, then you would need two controllers wired together for 3D, or one for each camera you want to trigger.
Without the Bluetooth shutter release controller, I tap the phone screen to control the camera operations with more features available (like video).
With this setup I do not need to carry an external portable WiFi DHCP router with me, the phone does it all using WiFi Hot-spot!
The Remote Capture app can also control the twin cameras in video mode to make 3D videos. Also more cameras can be added to the WiFi network for multiple views of a scene at the same instant. Additional Android smart-phone cameras can be added to the WiFi network to capture simultaneous multiple views using the Open Camera Remote app.
I have not measured the NX500 camera's shutter synchronization time when using WiFi. It is acceptable for non-flash shoots, but not as good as a wired camera's shutter/focus remote. Of course the cameras have to be both locked in focus to get the best synchronization. This is the reason for the focus hold feature in the Remote Capture app. I find synchronization works best in NX500 camera manual mode, not auto mode. A lot depends on the movement of your subject and camera synchronization to capture the best quality 3D stereo photo.
