The ARRI ZMU-4 is a handheld zoom controller with a force-sensitive joystick, a run/stop button and three user buttons. It connects via cable (LBUS, 7-pin CAM) or wirelessly via the RF-EMIP module, and with an LBP-3500 battery it lasts up to 15 hours.
Mounts via the rosette on a pan bar or handle and can be operated from both left and right sides. The display shows focal length, zoom speed and battery status; marks and limits can be set. Besides ARRI cameras, it supports Sony VENICE, RED and Canon Cinema EOS.
Ideal for
Why ARRI ZMU-4 Zoom Main Unit
- Wired and wireless – LBUS, CAM 7-pin or RF-EMIP radio.
- Long runtime – Up to 15 h on LBP-3500 battery.
- Run/stop and user buttons – Camera control without leaving the pan bar.
- Ambidextrous design – Mounts on the left or right side.
Key specs
| Type | Handheld zoom controller |
|---|---|
| Axes | 1 (zoom) |
| Compatibility | ALEXA 35, Mini/Mini LF, AMIRA, Sony VENICE, RED, Canon C300/C500/C700; Hi-5, OCU-1 |
| Power | from camera 10.5–34 V DC, Sony NP-F550/750, ARRI LBP-3500 |
Control and connections
| Controller | force-sensitive zoom joystick |
|---|---|
| Display | 0.96″ TFT |
| Buttons | run/stop with tally, 3 user, 2 zoom speeds |
| Connectors | LBUS 4-pin, CAM 7-pin, USB-C, slot for radio module |
| Runtime | up to 15 h (LBP-3500 + RF-EMIP) |
| Dimensions | 277 × 66 × 45 mm |
| Operating temperature | -20 to +50 °C |
Kit contents
| Kit contents | ZMU-4, RF-EMIP module, RA-7 and RA-8 rosette adapters, rosette holder |
|---|---|
| Mount | ARRI rosette |
