Dark areas become alpha?

Date : Thu, 28 Jul 2005 17:35:12 +0900
To : <xsi(at)Softimage.COM>
From : "John Norman" <john.norman(at)grapecity.com>
Subject : Dark areas become alpha?
Title: Dark areas become alpha?

Hello,

I noticed when I render something, anything with a dark shade becomes an alpha, this makes it hard for me to composite. I end up seeing the bg wherever the darken areas are.

I have a dirtmap effect connected to the camera lens.
A global dirtmap. Can this be part of the reason?
It's driving me nuts.
Does anyone know how to solve this?
Thanks

john


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