---
title: extrinsicOrientationQuaternion
framework: coremedia
role: symbol
role_heading: Instance Property
path: coremedia/cmformatdescription/extensions-swift.struct/value/cameracalibrationdatalenscollection/calibration/extrinsicorientationquaternion
---

# extrinsicOrientationQuaternion

Camera’s orientation to a world or scene coordinate system. The orientation value is a unit quaternion (ix, iy, and iz) instead of the classical 3x3 matrix.

## Declaration

```swift
var extrinsicOrientationQuaternion: SIMD3<Float>
```