View Full Version : how to avoid "borders" get anti-aliased to the background-color

11 November 2006, 09:22 PM

my prob is when i render an object with a white scene-background the border areas become brighter.
When compositing its a little bit disturbing to have brighter borders when i e.g
put it on a dark background later on.

is there a good solution ?


11 November 2006, 05:55 AM
What are you using as compositor program? If it's Photoshop then it has always issues with transparencies of 3D rendering. But if you uncheck Premultiply in render global then you will have better options later. I found that using TIF as output format will let Photoshop to interpret automaticly and nicely the alpha whithin the file.
Also check this article out:

11 November 2006, 09:38 AM
thx for your reply. that arcticle is very good.

but i cant find that premultiply option in my render globals
(rendering with maya/mentalray) where is it hidden ?

thx, maxwater

11 November 2006, 06:02 AM
It's there in Render Global under Framebuffer.

11 November 2006, 09:40 AM
Thanks Alot !

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11 November 2006, 09:40 AM
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