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Pre-multiplied,Matted Alpha Channel
Hi, I am an After Effects user, when you render a file in after effects you get an option to pre-multiply or not your alpha channel. Photoshop does not give you this option, Here is a visual example of what I’m talking about, Here is Photoshop version
Here is the pre-multiplied After Effect Version
My question is how do you premultiply or matte the alpha channel in Photoshop
Thanks in advance -
3 Replies
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Can’t do it automatically
Two real options
If Photo.. create tranparenct with layer mask…. then disable layer mask and let alpha channel cut hole
if graphic… fill color of glow or shadow in as a solid background layer after creating the channel
Richard M. Harrington, PMP
Author: Photoshop CS for Nonlinear Editors
Co-Author Final Cut Pro on the Spot, After Effects on the Spot, Broadcast Graphics on the Spot, and After Effects @ Work
Check out the new DVD: Photoshop CS: Essentials for Digital Video from http://www.photoshopforvideo.comedit – produce – direct –
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Works like Charm
Thanks -
Good….
Check out PS NLE book or photoshopforvideo.com for videos on this and more
Richard M. Harrington, PMP
Author: Photoshop CS for Nonlinear Editors
Co-Author Final Cut Pro on the Spot, After Effects on the Spot, Broadcast Graphics on the Spot, and After Effects @ Work
Check out the new DVD: Photoshop CS: Essentials for Digital Video from http://www.photoshopforvideo.comedit – produce – direct –
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