---
title: "Blur..::.Radius Property "
canonical: https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Transforms_Blur_Radius.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# Blur.Radius Property 
 
Gets/sets blur radius.
 
**Namespace:** [Aurigma.GraphicsMill.Transforms](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Transforms.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public Property Radius As Single
```
 
```csharp
public float Radius { get; set; }
```
 
### Property Value
Value specifying blur radius. Must be positive.
 
## Remarks
  
**Note** 
Radius means how much neighbour pixels algorithm fetches (for radius = 1 it will take 8 neighbours, for radius = 2 it will use already 24 neighbour pixels, etc). That's why in general the larger radius is, the slower blur works. However Graphics Mill for .NET implements special algorithms which are optimized for large radiuses, that's why this rule not always works.
 
Default value is 2.
   
## See Also

### Reference

- [Blur Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Transforms_Blur.htm.md)
- [Aurigma.GraphicsMill.Transforms Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Transforms.htm.md)