[Radiance-general] ambient light

[iebele]

Hi Bei,

Did you set the -st paramater (specular treshhold) ?
If you have a specular value of, say, 0.01, your -st value should be also 0.01, otherwise you will not see any
specular reflections.

Succes,

Iebele



Bei Xiao wrote:

> Hi,
>  I am using Radiance to simulate objects with various glossy  parameters.
> But I found no matter how did I set up the material properties of the
> objects, they all look the same under the light. I guess there must be
> too much ambient light so the highlights on the objects are invisible. I
> want to turn off the ambient light in the scene and only keep a few area
> light sources. How shall I set up the parameters? Also, how do I include these parametesr in the .rad file?
> thanks.
>
> Bei
>
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