DNC-1095
Underwater 100 ft SDI LCS surface cable for ARRI ALEXA Mini Camera
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Underwater (up to 100 feet) DNC-1095 data/SDI cable (two cables in one) give you the capability to transmit 3G signal 1080p60 from underwater housing for ARRI Alexa Mini camera and Control camera functions, focus, iris, and/or zoom from a distance, such as when shooting handheld or using a stabilizer, gimbal or crane
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Solid conductors provide maximum performance over long distances
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The cable consists of Dive And See SDI/Data custom waterproof connector from one end, BNC connector and Fischer 5 pins connector for ARRI WCU-4 controller from another end
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DNC-1095 consist of a waterproof connector with a built-in water block
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Applications: To control camera functions of Arri Alexa Mini, focus, iris, and/or zoom from a distance, such as when shooting handheld or using a stabilizer, gimbal or crane.
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ARRI WCU-4 controller, and monitoring SDI video streaming of the Arri camera.
Brief Description
The ARRI Alexa Mini camera can be controlled using the ARRI WCU-4 (Wireless Compact Unit) through various functions and commands, allowing for precise and remote control of camera settings. Here are the key functions and commands that the Alexa Mini provides to the WCU-4:
1. Lens Control:
- Focus, Iris, and Zoom Control: The WCU-4 allows the operator to remotely control focus, iris, and zoom when connected to compatible motors on the Alexa Mini. This is often used with ARRI's lens motors such as the cforce mini or cforce plus.
- Pre-marked Focus Rings: The WCU-4 supports pre-marked focus rings, allowing precise focus pulls.
2. Camera Control:
- Start/Stop Recording: The WCU-4 can remotely start and stop recording on the Alexa Mini.
- Shutter Angle: Remotely adjust the camera's shutter angle.
- Frame Rate: Change the frame rate directly from the WCU-4.
- Exposure Index (EI): Adjust the camera's exposure index settings.
- ND Filters: Control the internal ND filter settings if applicable.
- White Balance: Set and adjust the white balance on the camera.
3. Status and Metadata Monitoring:
- Lens Data Display: The WCU-4 can display real-time lens data such as focus distance, iris setting, and zoom position.
- Camera Status Information: The WCU-4 displays key camera status information, including battery levels, recording status, timecode, and more.
4. User Button Assignments:
- The Alexa Mini's user buttons can be mapped to specific functions and controlled remotely via the WCU-4.
5. Lens File Management:
- Lens Mapping and Calibration: The WCU-4 allows for the calibration and mapping of lenses directly from the unit, storing lens data for quick access and precise control.
6. Advanced Features:
- Overlay Mode: Use overlay mode on the WCU-4 for additional data displays or monitoring specific camera parameters.
- Motorized IRND Control: If applicable, control motorized internal ND filters.
These functions make the combination of the ARRI Alexa Mini and the WCU-4 a powerful toolset for cinematographers, enabling remote operation and precise control over critical camera functions during shooting.
SDI Capability
The SDI (Serial Digital Interface) output on the ARRI Alexa Mini camera serves several key functions, primarily related to video monitoring and external recording. Here’s what the SDI output does:
1. Real-Time Video Monitoring:
- On-Set Monitoring: The SDI output provides a real-time video feed directly from the camera, which can be sent to external monitors, viewfinders, or other monitoring devices on set. This allows the camera operator, director, and crew to see exactly what the camera is capturing.
- Multiple Resolutions and Frame Rates: The Alexa Mini can output video in different resolutions (e.g., 1080p, 720p) and frame rates, depending on the camera settings and production needs.
2. External Recording:
- Recording to External Devices: The SDI output can be used to send the video signal to an external recorder. This is often done when a higher quality recording is needed, such as ProRes or RAW, or when dual recording (simultaneous recording to both internal and external media) is required for backup purposes.
- 4K UHD Output: The Alexa Mini can output a 4K UHD signal via SDI, which is useful for productions that require 4K delivery but are recording internally in a different resolution.
3. Metadata and Overlays:
- Camera Metadata: The SDI output can carry camera metadata, such as lens information, exposure settings, and timecode, which can be displayed on compatible monitors or recorded for post-production use.
- Frame Lines and Overlays: The Alexa Mini allows for the output of frame lines, safety zones, and other overlay information via the SDI output, which can help with framing and composition during shooting.
4. LUT (Look-Up Table) Application:
- Look Application: The SDI output can carry a video signal with an applied LUT (Look-Up Table), allowing the crew to monitor the footage with a specific look or color grade applied. This is especially useful when shooting in a log profile, as it helps visualize the final graded image on set.
5. Live Streaming:
- Broadcast and Streaming: The SDI output can be used for live broadcasting or streaming purposes, sending the camera feed directly to a live broadcast or streaming encoder.
6. Timecode and Sync:
- Timecode Output: The SDI output can embed timecode, which is crucial for synchronizing footage with audio or other cameras in a multi-camera setup.
- Genlock Sync: The SDI signal can be used to synchronize the Alexa Mini with other devices in a multi-camera environment through genlock, ensuring all devices are perfectly in sync.
The SDI output on the ARRI Alexa Mini is a versatile and critical interface for both on-set operations and post-production workflows, providing high-quality video output, monitoring, and control capabilities
Cable Specification
Applications
ARRI WCU-4 controller, and monitoring SDI video streaming of the Arri camera.
