---
title: kCGImagePropertyDNGVersion
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertydngversion
---

# kCGImagePropertyDNGVersion

An encoding of the four-tier version number.

## Declaration

```swift
let kCGImagePropertyDNGVersion: CFString
```

## See Also

### Image File Data

- [kCGImagePropertyDNGPrivateData](imageio/kcgimagepropertydngprivatedata.md)
- [kCGImagePropertyDNGMakerNoteSafety](imageio/kcgimagepropertydngmakernotesafety.md)
- [kCGImagePropertyDNGRawDataUniqueID](imageio/kcgimagepropertydngrawdatauniqueid.md)
- [kCGImagePropertyDNGSubTileBlockSize](imageio/kcgimagepropertydngsubtileblocksize.md)
- [kCGImagePropertyDNGRowInterleaveFactor](imageio/kcgimagepropertydngrowinterleavefactor.md)
- [kCGImagePropertyDNGBackwardVersion](imageio/kcgimagepropertydngbackwardversion.md)