[Radiance-general] color of the light source

[Greg Ward]

Hi Bei,

Colored sources are a complex issue due to white balance.  Instead of 
giving you a long-winded and incomplete reply, I'll refer you to the 
paper I coauthored on the subject:

	http://www.anyhere.com/gward/papers/egwr02/

Have you been following the related thread on spectral reflectance?

-Greg

> From: Bei Xiao <beixiao at mail.med.upenn.edu>
> Date: May 14, 2004 1:32:39 PM PDT
>
> HI,
>  Thank you all very much for the previous replies.
>  I have another very rudimentary questions about the rendering. I use
> a point light source in my rendering of the following parameters:
> void light bulb_light
> 0
> 0
> 3 5000 5000 5000
> Am i suppose to render the scene with white color?
> But this light source illuminate the room with yellowish color. How 
> can I
> get the white illumination? Is there any parameter that I need to set 
> to
> get the correct color of thelight?
>
> Thanks a lot.
>
> Bei