---
title: "Levels..::.Threshold Property "
canonical: https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Transforms_Levels_Threshold.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/)

# Levels.Threshold Property 
 
Gets/sets threshold level.
 
**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 Threshold As Double
```
 
```csharp
public double Threshold { get; set; }
```
 
### Property Value
Threshold level on which correction should be based.
 
## Remarks
  
The threshold value is used to define a percent of pixels on edges of the tonal range to discard. Threshold = 1 is 100% of pixels. To get more or less realistic result, use a value less than 1% (0.01). For example:
 
- If you want to get a result similar to Photoshop® 7, use 0.5% (0.005).
- If you want a result similar to Photoshop CS or later, use 0.1% (0.001).
   
## See Also

### Reference

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