# maxToneMapLuminance

> Maximum input luminance at which gradation is preserved when 10% of the screen is bright.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public int maxToneMapLuminance { get; }
```

### Remarks

Measured in nits. This value is -1 if Unity cannot obtain a value from the HDR display. Accessing this member results in an exception if HDR is not available on the display. Use [HDROutputSettings.available](/engine/6000.0/script-reference/unityengine/hdroutputsettings/available.md) for the display to check that HDR is available.