---
title: "Brightness.Amount Property "
canonical: https://www.graphicsmill.com/docs/gm/P_Aurigma_GraphicsMill_Transforms_Brightness_Amount.htm
product: "Graphics Mill"
---

# Brightness.Amount Property 
 
Gets or sets the brightness modifier.
 
**Namespace:** [Aurigma.GraphicsMill.Transforms](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Transforms.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```csharp
public float Amount { get; set; }
```
 
### Property Value
The brightness modifier in range [-1, 1]. The default value is `0`.
 
## Remarks
  
**Note** 
If you set [Auto](https://www.graphicsmill.com/docs/gm/P_Aurigma_GraphicsMill_Transforms_Brightness_Auto.htm.md) property to `true`, and modifying Amount, [Auto](https://www.graphicsmill.com/docs/gm/P_Aurigma_GraphicsMill_Transforms_Brightness_Auto.htm.md) is reset to `false`.
   
## See Also

### Reference

- [Brightness Class](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Transforms_Brightness.htm.md)
- [Aurigma.GraphicsMill.Transforms Namespace](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Transforms.htm.md)