• Adobe Photoshop

  Creating Alpha Channels in Photoshop

  Posted by Ted Baxter on August 8, 2006 at 8:18 pm

  Hi –
  Stupid question I know – can anyone give a step by step for creating alpha channels in photoshop for importing into AE? Tried photoshop help and its no help!
  thanks

  Jim Kanter replied 20 years ago 2 Members · 3 Replies
• 3 Replies

• 

  Jim Kanter

  August 8, 2006 at 11:34 pm

  Make a selection of the pixels you want the alpha channel to display.

  Save the selection to a new channel and don’t give it a name.

  Done.

  Jim Kanter,
  Digital Film Institute
  http://www.dfilminst.com
• 

  Ted Baxter

  August 9, 2006 at 1:49 am

  Hi –
  Thanks for the reply – I made the alpha in PSD (which looked red in the channels palette) but when I imported it into AE I didn’t get the option box to import the alpha or not (ie straight or premulitiplied) does this mean the alpha didn’t import with the file?
  cheers…
• 

  Jim Kanter

  August 22, 2006 at 1:25 am

  Could be the preferences are set to automatically make a best guess.

  Jim Kanter,
  Digital Film Institute
  http://www.dfilminst.com

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