---
title: constrainedHigh
framework: coreimage
role: symbol
role_heading: Type Property
path: coreimage/cidynamicrangeoption/constrainedhigh
---

# constrainedHigh

Use extended dynamic range, but brightness is modulated to optimize for co-existence with other composited content.

## Declaration

```swift
static let constrainedHigh: CIDynamicRangeOption
```

## Discussion

Discussion For best results, images should contain contentAverageLightLevel metadata.

## See Also

### Enumeration Cases

- [standard](coreimage/cidynamicrangeoption/standard.md)
- [high](coreimage/cidynamicrangeoption/high.md)