- Support & Downloads
- New Features by Build
- Checklists
- Previzion Training
- Documentation
- Introduction
- Production Planning
- Target Surveying and Constellations
- Intersense Introduction
- Target Layout
- Placing Targets on a 25-foot Stage
- Placing Targets on a Soap Opera Stage
- Stage Coordinates
- Northing, Easting, Elevation to XYZ
- Overview of Surveyed Points
- Surveying for CG
- Survey Constellation Tool and CFGs
- Constellation files
- Intersense Startup
- Loading Constellation Files
- Constellation Editing
- Verify Tracking
- Intersense Settings
- Stage vs. Scene Coordinates
- Intersense Diagnostics
- Using the Portable Target Boards
- Importing Additional Survey Points
- Connections
- Previzion DATA CABLE
- Sync & Video — Evertz 1RU
- Sync & Video — Evertz 2430 + AJA 10AMA
- Verify Video Input
- Analyze Video in BRec
- Capture Video in BRec
- Generate Color Bars
- Timecode Connections
- Airtrack Connections
- Lens Connections – Fujinon
- Lens Connections – Canon
- Panavision Anamorphic Lenses
- Panavision Connections
- Panavision SD analog video tap
- Alexa Plus
- RED One Connections
- RED Epic Connections
- Preston Connections
- C Motion Connections
- Cooke Connections
- Element Technica Connections
- Testing Serial Connections
- Capturing Serial Data
- Preview Output
- Application Configuration
- Tracking
- Lens Interface
- Stereo Interface
- Video Interface
- Keying
- Holdout Mattes
- Scene Interface
- Color Correction Interface
- Takes Interface
- System Monitor Interface
- Lens Calibration
- Lens Grapher
- Creating Backgrounds
- Animation
- Photogrammetry
- Photogrammetry Overview
- Shooting Technique
- Solving with Photoscan
- Maya Import – Photoscan
- Set Axes and Freeze Xforms
- Modeling With Reference Mesh
- Fix Camera FOV
- Add Image Planes
- Projection Shaders
- Modeling – Overview
- Modeling – Starting with a Cube
- Modeling – Adding Mesh Detail
- Maya Texture Baker
- Export to Mari
- Mari Projections
- CgFx Shader Library
- Exporting Backgrounds
- Clean Geometry – Normals
- Clean Geometry – Faces
- Clean Geometry – Vertices
- Clean Geometry – UVs
- Clean Geometry – Edges
- Clean Geometry – Construction History
- Clean Scene – Optimizing Scene Size
- Clean Scene – Node Naming
- Clean Scene – Clean Texture Paths
- Clean Scene – Clean Shader Paths
- Clean Scene – Deleting Un-Used Nodes
- Previzion Export Checker
- Post Production Workflows
- Rendering Previzion Ready Scene in Maya
- Extracting Metadata with Take Converter
- Syntheyes
- Importing “edit_” Transform Data from Previzion Take
- Stereo data into Syntheyes
- Stereo data into 3D Equalizer
- Example Shot and Metadata
- A Quick Pipeline for Post Rendering a Scene used in Previzion
- Rendering Video as Texture in Maya
- Batch Rendering in Maya
- General Lift Encoded Technocrane
- GPS/IMU Tracking
- Troubleshooting
- Downloads
- Newsroom
- Contact
Connections - Alexa Plus
Arri D20/D21/Alexa
All 3 systems use the same sensor width when shooting 1920×1080 16:9 format (23.76 mm wide.)
The Alexa has a look-around mode, but this uses a slightly larger range of the sensor; the actual imaged size is the size shown above.
The output of the Alexa needs to be set to 1:1 of the actual imaged size, without the lookaround, to maintain tracking accuracy.
Alexa Plus/LDS Data
In the Alexa Plus, Arri LDS lens positions can be read directly out of HDSDI into Previzion. Notes:
Firmware version 5.0.1 beta 18001 or later must be installed
When a LDS lens is installed, the lens position will be read from the internal lens encoders.
When a non-LDS lens is installed, the lens position will be read from the LDS motors attached to the Alexa body. It is important to connect the zoom motor to the zoom motor connection, focus to focus, etc.