The Viltrox NexusFocus F1 Sony E to ARRI PL-Mount Autofocus Control System with Single Motor is an advanced solution for filmmakers who want to bring camera-driven autofocus and full electronic lens control to manual PL-mount cinema and CineMod lenses using Sony E-mount cameras. This comprehensive kit features a Sony E to ARRI PL-mount lens autofocus adapter, a lens motor, and a dedicated power box. By leveraging the AI-powered phase-detection autofocus and subject recognition capabilities of supported Sony cameras, this system empowers both solo operators and small crews with precise focus, iris, and zoom adjustments on revered PL-mount glass.
Practical Production Use
With the NexusFocus F1, professional filmmakers gain autofocus capability on classic cinema lenses while working on narrative, commercial, or documentary projects. Solo shooters can trust subject tracking for interviews or gimbal-mounted shots, while small teams benefit from repeatable, well-calibrated lens control even without a traditional focus puller. The adaptability of this system suits handheld, tripod, or stabilized camera rigs, delivering dependable focus and aperture control with streamlined setup.
Mechanical Design and Power Management
Engineered with durability in mind, the NexusFocus F1 is constructed from aluminum alloy and stainless steel, offering resilience on set. Its precision-machined flange guarantees accurate distance and true infinity focus.
- Dust-resistant seal safeguards the camera mount
- Internal antireflection threading minimizes flare
- Detachable tripod foot ensures balanced support for heavier setups
- USB-C connectivity with regulated power is available via the included Power Box, making the system compatible with a range of external or USB-C power sources
Integrated Display and Physical Controls
A backlit display built into the adapter ring gives users instant access to operating modes and essential lens data. Tactile buttons enable quick menu navigation directly on the unit, without the need for a mobile device.
- Backlit readout for use in dim environments
- On-adapter controls for lens selection and core settings
Native Camera-Driven Autofocus for Manual PL Lenses
Serving as a sophisticated control bridge, the NexusFocus F1 adapter converts Sony’s on-sensor phase-detection AF data and AI subject recognition into precise lens actuation. In contrast to LiDAR systems, the autofocus accuracy is based on the direct camera sensor readout, eliminating parallax and ensuring uniform sharpness across the image.
- Fully compatible with Sony hybrid AF modes, including face and eye tracking
- In-camera options let users tune focus transition speeds and AF response
- Designed for Sony E-mount cameras using an AI processing unit
Three-Channel FIZ Motor Control
The NexusFocus F1 supports up to three external motors (focus, iris, zoom) mounted on standard 15mm rods, enabling synchronized FIZ control for advanced and repeatable cine-style operation. This kit includes one motor for focus but can be expanded for full axis control.
- Focus, iris, and zoom functions are adjustable through the camera’s interface
- Motors can be repurposed for auxiliary roles, such as variable ND
- Each motor’s direction and assigned function can be customized onboard
App-Based Calibration and Wireless Operation
Calibration and system setup are managed via the Viltrox NexusFocus mobile app using Bluetooth connectivity. The adapter maintains a library of calibration profiles supporting hundreds of lenses, streamlining workflow across multiple productions.
- Automated calibration and preset management via the mobile app
- Real-time parameter feedback and adjustments
- Wireless remote control of focus, iris, zoom, and camera recording from a smartphone or tablet
