---
title: kCGImagePropertyDNGBaselineNoise
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertydngbaselinenoise
---

# kCGImagePropertyDNGBaselineNoise

The relative noise level of the camera model at an ISO of 100.

## Declaration

```swift
let kCGImagePropertyDNGBaselineNoise: CFString
```

## See Also

### Exposure

- [kCGImagePropertyDNGBaselineExposure](imageio/kcgimagepropertydngbaselineexposure.md)
- [kCGImagePropertyDNGBaselineExposureOffset](imageio/kcgimagepropertydngbaselineexposureoffset.md)