Hi,
Whenever I have an object with a blackbody emission over it that crosses in front of another geometry, the alpha gets extremely screwed up, which makes it harder for correct Z passes, etc.
Take a look at this photo below. I've got a beam of light ( just a long capsule with a blackbody emission over it) that crosses over regular geometry as well as the infinite background (alpha). The thickness of the light actually changes, which screws up my Z passes and is very very noticeable in Post. The light beam itself isn't touching any other geometry at all. There also appears to be a 1 pixel black line around the light as well.
This is rendered as a 16-bit EXR with :Alpha Channel" checked, "Keep Environment" unchecked. I've tried it with "Keep Environment" checked and I get the same result.
Any feedback would be greatly appreciated! Thanks!