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View Full Version : Crossfade for transparant layers


Heerko
12-22-2008, 08:05 AM
Hi I was wondering how to make a crossfade for two transparant layers (steam in this case). I saw someone had the same problem before: http://forums.cgsociety.org/showthread.php?f=10&t=312667&highlight=opacity but no real solution was given here.

I know what causes the problem, all adobe products use Zeno Paradox like blending. It does'nt work linear, so 50% opacity + 50 opacity isnt 100% but 91.25 %

Does anyone know how to get a perfect crossfade without things getting darker and/or lighter?

Thnx for your time

Mylenium
12-22-2008, 09:02 AM
Alpha Add blending mode.

Mylenium

Heerko
12-22-2008, 09:04 AM
This will only work for non-transparant layers right?

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