CGTalk > Software Specific Forums > Adobe Photoshop and Corel Painter
Login register
Thread Closed share thread « Previous Thread | Next Thread »  
 
Thread Tools Search this Thread Display Modes
Old 01-31-2014, 07:53 PM   #1
goodvibrato
Frequenter
 
goodvibrato's Avatar
portfolio
Luke Simpson
Oklahoma City, USA
 
Join Date: Sep 2008
Posts: 165
PS - Edit alpha channel per layer

I need to be able to edit the alpha channels on different layers separately, but it appears they are linked. If I change the alpha on one layer it will change it on the other as well. I can edit the RGB on both layers separately, but not the alpha. Any way to do this without creating separate PSDs?
 
Old 02-03-2014, 09:33 PM   #2
hvanderwegen
Expert
 
hvanderwegen's Avatar
Herbert van der wegen
 
Join Date: Feb 2003
Posts: 563
In Photoshop there is no direct method to affect the transparency (alpha channel) of a specific layer. There is a way to convert the transparency to a layer mask, though: Layer->Layer Mask_>From Transparency. That allows you to work on the "alpha channel" per layer. When you are finished apply the layer mask.

A more direct approach is delivered by Photoline: the eraser tool works directly on the transparency/alpha channel, and the drawing tools allow the user to draw in the A (Alpha channel) only. Aside from that, like Photoshop, creating a layer mask based on Alpha is pretty much identical to the process in PS.

Unfortunately, Photoshop does not offer tools to directly draw in the A channel.
 
Old 02-04-2014, 12:37 AM   #3
goodvibrato
Frequenter
 
goodvibrato's Avatar
portfolio
Luke Simpson
Oklahoma City, USA
 
Join Date: Sep 2008
Posts: 165
I kinda thought so. Thanks for the layer mask tip.
 
Old 02-04-2014, 12:37 AM   #4
CGTalk Moderation
Lord of the posts
CGTalk Forum Leader
 
Join Date: Sep 2003
Posts: 1,066,481
Thread automatically closed

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.
__________________
CGTalk Policy/Legalities
Note that as CGTalk Members, you agree to the terms and conditions of using this website.
 
Thread Closed share thread


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
CGSociety
Society of Digital Artists
www.cgsociety.org

Powered by vBulletin
Copyright 2000 - 2006,
Jelsoft Enterprises Ltd.
Minimize Ads
Forum Jump
Miscellaneous

All times are GMT. The time now is 03:00 AM.


Powered by vBulletin
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.