---
title: kCGImagePropertyDNGBaselineExposure
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertydngbaselineexposure
---

# kCGImagePropertyDNGBaselineExposure

The amount by which to adjust the zero point of the exposure, specified in EV units.

## Declaration

```swift
let kCGImagePropertyDNGBaselineExposure: CFString
```

## See Also

### Exposure

- [kCGImagePropertyDNGBaselineNoise](imageio/kcgimagepropertydngbaselinenoise.md)
- [kCGImagePropertyDNGBaselineExposureOffset](imageio/kcgimagepropertydngbaselineexposureoffset.md)