LUMIX Tether Multicam: 12 Cameras Over Ethernet

From v2.3 on macOS and v2.0 on Windows, LUMIX Tether supports a multi-view mode that lets you display and control up to 12 LUMIX cameras simultaneously. The most reliable transport is wired Ethernet through a PoE switch, with each camera assigned a static IP on the same subnet as your computer.

What you need

Up to 12 supported LUMIX bodies — best results with BGH1, BS1H, GH5II (cameras built for rig work).
USB-C → Gigabit Ethernet adapters on each non-box camera.
A Gigabit (or 2.5 GbE) managed switch with at least 13 ports.
Cat6 cabling, kept under 50 m per run.
A computer with a wired Ethernet NIC. Wi-Fi will not keep up at full live view.

Network setup

Pick a subnet — for example 192.168.50.0/24.
Assign each camera a static IP from the menu (Setup → Network → IP Address). Use sequential addresses 192.168.50.11–192.168.50.22.
Set the computer's NIC to 192.168.50.10, mask 255.255.255.0, no gateway.
In LUMIX Tether choose Connect → LAN and the app will scan the subnet and list every camera that answers.

Driving the rig

The multi-view tab shows a thumbnail per camera; click any tile to focus its controls in the side panel. Global commands — shutter all, start recording all, load setting — apply to every selected camera in one shot, which is the actual reason to build this rig.

Performance notes

Expect about 10 Mbps of live-view bandwidth per camera at standard quality. Twelve cameras fit comfortably inside a 1 Gbps switch.
Disable per-camera live view on tiles you're not actively framing to drop CPU load.
If you see "device not responding" on one tile, swap that camera's Ethernet adapter first — it is the failure point in 90% of cases.