Christian Froeschlin wrote:
> cshake wrote:
> 
>> behavior at all? (possibly helpful addition: the original light color 
>> is way
>> over rgb 1.0 (closer to rgb 1*10000), to allow for a distant light)
> 
> Sounds like a clipping effect. This would means your high intensity
> color actually speficies the orange, not the yellow, but in the high
> intensity areas the red channel is oversaturated and clipped to the
> maximum supported by the output format (typically 8 bit), so the
> ratio of red/green becomes smaller and thus more yellow-ish.
> 
> Try reducing the light intensity to observe the change.

Thanks, reducing the intensity did help, I guess I was expecting the 
color to be closer to white than it really was. I also didn't realize 
that clipping or oversaturation could be an issue, had never run into it 
before.
I rendered the test scene again and found that increasing the bit depth 
of the output file from 8 to 16 (png) didn't make a difference itself, 
but either dimming the light or moving it farther away (with fading) did 
do the trick.

I'm still stuck on the other issue, but this gets me somewhere.

Post a reply to this message