<!--
{
  "availability" : [
    "iOS: 26.0.0 -",
    "iPadOS: 26.0.0 -",
    "macCatalyst: 26.0.0 -",
    "macOS: 26.0.0 -",
    "tvOS: 26.0.0 -",
    "visionOS: 26.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "VideoToolbox",
  "identifier" : "/documentation/VideoToolbox/kVTCompressionPropertyKey_CameraCalibrationDataLensCollection",
  "metadataVersion" : "0.1.0",
  "role" : "Global Variable",
  "symbol" : {
    "kind" : "Global Variable",
    "modules" : [
      "Video Toolbox"
    ],
    "preciseIdentifier" : "c:@kVTCompressionPropertyKey_CameraCalibrationDataLensCollection"
  },
  "title" : "kVTCompressionPropertyKey_CameraCalibrationDataLensCollection"
}
-->

# kVTCompressionPropertyKey_CameraCalibrationDataLensCollection

```
let kVTCompressionPropertyKey_CameraCalibrationDataLensCollection: CFString
```

## Discussion

\abstract Specifies intrinsic and extrinsic parameters for single or multiple lenses.
\discussion The property value is an array of dictionaries describing the camera calibration data for each lens. The camera calibration data includes intrinsics and extrinics with other parameters.
For a stereoscopic camera system, the left and right lens signaling can be done with the kVTCompressionPropertyCameraCalibrationKey_LensRole key and its value.
The following keys are required in each kVTCompressionPropertyKey_CameraCalibrationDataLensCollection dictionary.
kVTCompressionPropertyCameraCalibrationKey_LensAlgorithmKind
kVTCompressionPropertyCameraCalibrationKey_LensDomain
kVTCompressionPropertyCameraCalibrationKey_LensIdentifier
kVTCompressionPropertyCameraCalibrationKey_LensRole
kVTCompressionPropertyCameraCalibrationKey_LensDistortions
kVTCompressionPropertyCameraCalibrationKey_LensFrameAdjustmentsPolynomialX
kVTCompressionPropertyCameraCalibrationKey_LensFrameAdjustmentsPolynomialY
kVTCompressionPropertyCameraCalibrationKey_RadialAngleLimit
kVTCompressionPropertyCameraCalibrationKey_IntrinsicMatrix
kVTCompressionPropertyCameraCalibrationKey_IntrinsicMatrixProjectionOffset
kVTCompressionPropertyCameraCalibrationKey_IntrinsicMatrixReferenceDimensions
kVTCompressionPropertyCameraCalibrationKey_ExtrinsicOriginSource
kVTCompressionPropertyCameraCalibrationKey_ExtrinsicOrientationQuaternion

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)