---
title: kCGImagePropertyExifLightSource
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertyexiflightsource
---

# kCGImagePropertyExifLightSource

The light source.

## Declaration

```swift
let kCGImagePropertyExifLightSource: CFString
```

## See Also

### Image Quality

- [kCGImagePropertyExifCFAPattern](imageio/kcgimagepropertyexifcfapattern.md)
- [kCGImagePropertyExifBrightnessValue](imageio/kcgimagepropertyexifbrightnessvalue.md)
- [kCGImagePropertyExifFlash](imageio/kcgimagepropertyexifflash.md)
- [kCGImagePropertyExifSpatialFrequencyResponse](imageio/kcgimagepropertyexifspatialfrequencyresponse.md)
- [kCGImagePropertyExifContrast](imageio/kcgimagepropertyexifcontrast.md)
- [kCGImagePropertyExifSaturation](imageio/kcgimagepropertyexifsaturation.md)
- [kCGImagePropertyExifSharpness](imageio/kcgimagepropertyexifsharpness.md)
- [kCGImagePropertyExifGamma](imageio/kcgimagepropertyexifgamma.md)
- [kCGImagePropertyExifWhiteBalance](imageio/kcgimagepropertyexifwhitebalance.md)