[Radiance-general] Color reflectance values and materials..

[Greg Ward]

Radiance uses slightly different color primaries and a different  
(neutral) white point than the CCIR709 set that is the basis for sRGB  
(and other RGB) standards.  This is historical, but not without  
reason, which is why you should stick with the xyz_rgb.cal file for  
back-and-forth conversions.

Best,
-Greg

> From: Jack de Valpine <jedev at visarc.com>
> Date: November 7, 2008 10:41:23 AM PST
>
> Hi All,
>
> It looks like luxal is using a different formula for converting XYZ  
> to RGB. I am not sure what the difference is but the values are  
> quite different than the technique outlined in my previous post.
>
> -Jack
>