---
title: "settingContentAverageLightLevel(_:)"
framework: coreimage
role: symbol
role_heading: Instance Method
path: "coreimage/ciimage/settingcontentaveragelightlevel(_:)"
---

# settingContentAverageLightLevel(_:)

Create an image by changing the receiver’s contentAverageLightLevel property.

## Declaration

```swift
func settingContentAverageLightLevel(_ average: Float) -> CIImage
```

## Return Value

Return Value  An autoreleased CIImage.

## Discussion

Discussion Changing this value will alter the behavior of the CIToneMapHeadroom and CISystemToneMap filters. If the value is set to 0.0 or less then the returned image’s contentAverageLightLevel is unknown.