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7. The Menus / 7.6 The Tool Menu

### 7.6.38 Channel Mixer

The Channel Mixer replaces the single channels of an image by a combination of all channels.

Mainly the Channel Mixer is used to convert a color image to a gray image according to user-defined rules. In order to do this, the Output Channel has to be set to All. Now the Source Channels can be used to create the best mix. Usually the sum of the source channels should be 100%. If not, the value Constant can be used to correct the result.