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Digital ImagingUnit 8: Enhancing Specific Selections & Adjusting ColorsModule 2: Creating and Saving Alpha Channels
Alpha Channels
Alpha channels are the areas of an image where masks are stored. (You may recall a mask is an area of the image that is protected from editing).
Digital ImagingUnit 8: Enhancing Specific Selections & Adjusting ColorsModule 2: Creating and Saving Alpha Channels
Alpha Channels
To create an alpha channel:
Click the New Channel button at the bottom of the Channels panel.
Using the paintbrush tool, paint on the new channel to mask out image areas.
Digital ImagingUnit 8: Enhancing Specific Selections & Adjusting ColorsModule 2: Creating and Saving Alpha Channels
Alpha Channels
To edit an alpha channel:
Use the paintbrush tool to add or delete areas on the mask.
Painting with black increases the masked area.
Painting with white increases the selected area.