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

# domain

Specifies the kind of lens (e.g., color).

## Declaration

```swift
var domain: CMFormatDescription.Extensions.Value.CameraCalibrationDataLensCollection.LensDomain
```