---
title: kCGImagePropertyDNGActiveArea
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertydngactivearea
---

# kCGImagePropertyDNGActiveArea

The rectangle that defines the non-masked pixels of the sensor.

## Declaration

```swift
let kCGImagePropertyDNGActiveArea: CFString
```

## See Also

### Crop Data

- [kCGImagePropertyDNGMaskedAreas](imageio/kcgimagepropertydngmaskedareas.md)
- [kCGImagePropertyDNGDefaultCropOrigin](imageio/kcgimagepropertydngdefaultcroporigin.md)
- [kCGImagePropertyDNGDefaultCropSize](imageio/kcgimagepropertydngdefaultcropsize.md)
- [kCGImagePropertyDNGDefaultUserCrop](imageio/kcgimagepropertydngdefaultusercrop.md)