I've got a strange glitch with my rendered images.
If I render a red sphere with a single light, I get a bright red fringe along the edge of the sphere that is in the shade. It looks like it appears only where the sphere is anti-aliased.
The thing is, I only see it when I load the Tiff image in a 3rd party application (Photoshop, ACDSee, Digital Fusion, etc). If I render to "framebuffer" instead, this artifact isn't visible.
Is this a bug in the tiff saver?
Hmm, I don't seem to be getting this anymore. I've no idea what's changed.
I'll let you know if it happens again and try to isolate the cause.