2023 ASWF OpenEXR Virtual Town Hall
- Cary Phillips
August 1, 2023
Presentation Slides:
New Optional Standard Attributes:
Support automated editorial workflow
reelName, imageCounter, ascFramingDecisionList
Support forensics (“which other shots used that camera and lens before the camera firmware was updated?”)
cameraMake, cameraModel, cameraSerialNumber, cameraFirmware, cameraUuid, cameraLabel
lensMake, lensModel, lensSerialNumber, lensFirmware
cameraColorBalance
Support pickup shots (reproduce critical camera settings)
shutterAngle, cameraCCTSetting, cameraTintSetting
Support metadata-driven match move
sensorCenterOffset, sensorOverallDimensions, sensorPhotositePitch, sensorAcquisitionRectangle
nominalFocalLength, effectiveFocalLength, pinholeFocalLength, entrancePupilOffset
tStop (complementing existing aperture)
Tracking current work in SMPTE
SMPTE is trying to be more agile, and virtual production makes a good test case for their efforts; there’s an overview blog post on their site:
Real-world camera and lens metadata is messy
Camera vendors provide metadata with their own names, their choice of data type, their choice of unit, and perhaps most importantly their own semantics
SMPTE offers metadata normalization definitions
Anyone with a GitHub account can comment on them: https://github.com/SMPTE/ris-osvp-metadata/
SMPTE works with camera vendors to show how their metadata is mapped to SMPTE RIS OSVP metadata
Anyone with a GitHub account can file an Issue or submit a PR: https://github.com/SMPTE/ris-osvp-metadata-camdkit
ARRI, Blackmagic Design, Canon, RED, Sony contributions so far
The new metadata leverage a very good white paper from Cooke Optics establishing lens terminology for VFX
The definitions in this paper are used in the SMPTE RIS for OSVP camdkit project just mentioned
… that you can find at