通道

通道面板允许您打开或者关闭与您当前使用的色彩空间有关的色彩通道，每个通道都有单独的复选框。您不能在此面板中编辑颜色通道。

编辑通道

If you want to edit individual channels by their grayscale component, you will need to manually separate a layer. This can be done with a series of commands with the layer docker.

1. 选择您要提取的通道。

2. Go to Image ‣ Separate Image.

3. Select the following options and click OK:

   1. Source: Current Layer.

   2. Alpha Options: Create separate separation from alpha channel.

   3. Output to Grayscale, not color: unchecked.

4. Hide your original layer.

5. Select All of the new channel layers and put them in a group layer (Layer ‣ Quick Group).

6. Select the Red layer and change the blending mode to “Copy Red” (these are in the Misc. category).

7. Select the Green layer and change the blending mode to “Copy Green”.

8. Select the Blue layer and change the blending mode to “Copy Blue” .

9. Make sure the Alpha layer is at the bottom of the group.

10. 为红、绿色和蓝通道启用继承透明度。

Here is a video to see this process in Krita 3.0.

When working with editing channels, it can be easier to use the Isolate Layer feature to only see the channel. Right-click on the layer to find Isolate Layer.