oquendoG Posted February 1, 2017 Share Posted February 1, 2017 Hi as the title says I don't know what composite alpha channel is and how I can use it. I understand that alpha is transparency but this channel is white, I've never used it but I want to know what it is and what it is its function thanks.... Quote Link to comment Share on other sites More sharing options...
Staff Leigh Posted February 24, 2017 Staff Share Posted February 24, 2017 The Composite Alpha channel shows alpha for the entire composition. If it's White it means that your composition is opaque and has no transparency. If you had any transparent areas they would show in black. All channels including the Alpha can be used to create selections, masks, spare channels etc to further edit your images. We have a couple of video tutorials that explain how to use Channels in Affinity Photo here: Channels (Affinity Photo) Channels for Alpha Masking (Affinity Photo) Quote Link to comment Share on other sites More sharing options...
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