---
title: extendedDynamicRangeHeadroom
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/realityrenderer/extendeddynamicrangeheadroom
---

# extendedDynamicRangeHeadroom

The amount of headroom available for extended dynamic range content.

## Declaration

```swift
var extendedDynamicRangeHeadroom: Float { get set }
```

## Discussion

Discussion When EDR output is enabled using extendedDynamicRangeOutput, standard dynamic range values output by this RealityRenderer will be scaled such that there’s some headroom to display extended range values. This value is in the range [1.0-16.0]. The default value is 2.0.