playing around with clouds and lighting - a fill light in the sky to the centre right of this render shows up as a splodge of red, though it was set to be 'not visible'. It is ridiculously bright, about 1 million units. The scene has 2 suns and two fill lights, but only the brighter of the fill lights is doing this. Thought you should know...
Was GI on?
- Oshyan
Yes, also, checking the file, it seems I had raytraced shadows on as well (didn't intend to though)
Then it's probably a GI issue due to such high light intensities. The red render artifacts seem to usually stem from the GI system.
- Oshyan