The Viltrox NexusFocus F1 Autofocus Control Adapter (PL to E Mount) transforms manual ARRI PL-mount cinema and CineMod lenses into fully integrated autofocus and electronic lens control systems when paired with Sony E-mount cameras that feature AI processing. Tailored for seasoned filmmakers, solo operators, and compact crews, this adapter utilizes the camera’s native phase-detection autofocus as well as subject recognition capabilities to drive focus, iris, and zoom control motors, delivering a seamless blend of classic optics with modern camera intelligence.
Practical Production Use
In narrative, commercial, and documentary settings, the NexusFocus F1 unlocks autofocus capabilities for traditional cinema lenses on contemporary Sony cameras. Solo shooters can confidently use camera-based subject tracking for interviews or while operating a gimbal, while smaller crews benefit from repeatable and calibrated lens adjustments without needing a specialized focus puller. Whether the camera is handheld, tripod-mounted, or stabilized, the NexusFocus F1 streamlines precise focus and aperture adjustments with minimal setup, perfectly suiting fast-paced production conditions.
Mechanical Design and Power Management
Constructed from robust aluminum alloy and stainless steel, the NexusFocus F1 is engineered for reliability in demanding environments. It features precision machining to ensure accurate flange distances and dependable infinity focus performance.
- Dust-resistant seal at the camera connection prevents contamination
- Internal anti-reflection threading minimizes lens flare
- Detachable tripod foot offers balanced support for rigs
- USB-C port allows connection to the included Power Box, ensuring stable operation even with variable or external USB-C power sources
Integrated Display and Physical Controls
A backlit display is built into the adapter ring, providing instant status updates on operational modes and lens data. Tactile control buttons enable users to navigate menus quickly—without needing to access a mobile device.
- Excellent display visibility in low-light shooting environments
- Direct lens selection and system adjustments on the adapter itself
Native Camera-Driven Autofocus for Manual PL Lenses
Serving as a command hub, the NexusFocus F1 channels data from the camera body directly to external motors, interpreting Sony’s phase-detection autofocus (PDAF) and advanced AI subject recognition into precision-controlled lens movements. Unlike LiDAR-based alternatives, this sensor-driven approach eliminates parallax errors and keeps focus accurate across the entire frame.
- Full support for Sony hybrid autofocus, including sophisticated face and eye detection
- Adjustable focus transition speed and AF response via camera settings
- Optimized for Sony E-mount bodies with built-in AI processors
Three-Channel FIZ Motor Control
This system enables simultaneous control of focus, iris, and zoom through external motors securely mounted on standard 15mm rods. Each motor assignment is customizable using the onboard controls, delivering ample torque and rapid response for demanding cine lens applications.
- Adjust focus, iris, and zoom directly through the camera’s interface
- Assign motors to additional functions, such as variable ND filters
- Individual direction and function configuration per channel
App-Based Calibration and Wireless Operation
Calibration and configuration are managed through the Viltrox NexusFocus mobile app via Bluetooth connection. The adapter memorizes calibration profiles for countless lenses, making it easy to switch setups across various productions.
- Automated lens calibration and organization of presets through the app
- Real-time display and fine-tuning of system parameters
- Wireless operation of focus, iris, zoom, and camera recording straight from a smartphone or tablet
