ChannelChanger: reseparate image channels (4c)

You can change the input channels of an image area to any four channels available in your target color space. The target color space is defined by a published GMG OpenColor project and, optionally, a published ChannelChanger profile. You can either apply pre-calculated profiles matching your reseparation or have a profile calculated via the plugin.

The Output Channels list shows all output channels available in the selected GMG OpenColor project, regardless whether separation profiles have already been precalculated for the channels or not.

How to reseparate an object with the ChannelChanger

1. Open a CMYK image in Adobe Photoshop.
2. Select an area or layer that you want to reseparate. The selection must not require more than four output channels.
3. Click GMG ChannelChanger in the plugin panel.
4. Select the GMG OpenColor project defining the target color space.
5. Select maximal four output channels for your separation.
6. In case of four output channels, define the key color of your separation and the level of Gray Component Replacement (GCR). This way you can reduce the amount of CMY in gray areas while increasing the amount of Black.
7. If you want to process hidden or locked layers, set the conversion options accordingly.
8. Confirm your settings with the OK button.
   GMG ColorPlugin will request a ChannelChanger profile matching the selected output channels and settings from GMG OpenColor. If no matching profile exists, GMG OpenColor will calculate it and then send it to the plugin. As soon as the profile is available, the plugin will start the conversion. Requested profiles will also be shown in GMG OpenColor and might be reused later.