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# kCMFormatDescriptionCameraCalibration_IntrinsicMatrixReferenceDimensions

```
let kCMFormatDescriptionCameraCalibration_IntrinsicMatrixReferenceDimensions: CFString
```

## Discussion

\abstract Specifies the image dimensions to which the camera’s intrinsic matrix values are relative.
\discussion Values are width and height in a CFDictionary. Dictionary keys are compatible with CGSize dictionary, namely “Width” and “Height”.

---

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