---
title: "TiffExtraChannel Class"
canonical: https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Codecs_TiffExtraChannel.htm
product: "Graphics Mill"
---

# TiffExtraChannel Class
 
Represents the TIFF extra channel retrieved from an image.
 
**Namespace:** [Aurigma.GraphicsMill.Codecs](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Codecs.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```csharp
public sealed class TiffExtraChannel : Frame
```
 
## Remarks
 One of the most important features of the TIFF image format is the extra channels support. Extra channels are typically used to specify non-color information (such as image opacity), highlight some image area, or apply additional inks (such as gold, silver, etc.) in printing solutions.
 
## Examples
  
The following code reads a TIFF image, extracts an extra channel from it, and saves the channel's bitmap as a JPEG image.
 
```csharp
using (var reader = new TiffReader(@"Images\result.tif"))
{
    reader.Frames[0].ExtraChannels[1].GetBitmap().Save(@"Images\Output\extra.jpg");
}
```
 
## Inheritance Hierarchy
  
- System.Object
    - [Aurigma.GraphicsMill.PipelineElement](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_PipelineElement.htm.md)
        - [Aurigma.GraphicsMill.Codecs.Frame](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Codecs_Frame.htm.md)
            - Aurigma.GraphicsMill.Codecs.TiffExtraChannel
 
## Thread Safety
 Static members of this type are not safe for multi-threaded operations. Instance members of this type are not safe for multi-threaded operations.
   
## See Also

### Reference

- [TiffExtraChannel Members](https://www.graphicsmill.com/docs/gm/AllMembers_T_Aurigma_GraphicsMill_Codecs_TiffExtraChannel.htm.md)
- [Aurigma.GraphicsMill.Codecs Namespace](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Codecs.htm.md)

### Manual

- [Supported File Formats](https://www.graphicsmill.com/docs/gm/supported-file-formats.htm.md)
- [Working with TIFF Extra Channels](https://www.graphicsmill.com/docs/gm/working-with-tiff-extra-channels.htm.md)