Hello all,
Happy New Year to everyone. I’m trying to get to the bottom of something here, specifically dealing with compositing. I’m not sure if the problem is that I’m missing a trick in Cinema that would make my life easier, or if there is a fundamental issue I’m overlooking. I’ve had this reoccurring problem with my mattes and I can’t figure out how to solve it. Basically, when I render out objects I get a one pixel fringe on my matte, which doesn’t seem to make sense (and is the opposite of useful). When I render to PSD, TIFF, EXR, PNG, I get this fringe. What’s weird is that only under circumstances am I able to get the fringe to go away. I came across one completely by accident — I was practicing some tips and tricks using multipass compositing and I got it to go away. The problem is, the only way I was able to get it to disappear was via a GI pass comped into AE. Weird, eh? So let’s say I want to comp this Weyland logo into a background. I certainly wouldn’t want the white fringing that is the result of the matte. So the question is, what’s the way to solve this problem without having to render out multipass images? (So I could just use an RGBA image if I wanted to, because that problem occurs there too).
1] When I have my GI layer turned off, I get the weird 1 px fringe.
2] When GI is turned on, the fringe goes away.
Now, my GI is set to “Add,” which further confuses me why there is a fringe when the layer is turned off (shouldn’t it be the other way around??).