---
title: kCGImagePropertyDNGDictionary
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertydngdictionary
---

# kCGImagePropertyDNGDictionary

A dictionary of key-value pairs for an image that uses the Digital Negative (DNG) archival format.

## Declaration

```swift
let kCGImagePropertyDNGDictionary: CFString
```

## Discussion

Discussion For more information about the available metadata keys, see DNG Image Properties.