On 7/28/2018 11:43 AM, Alain wrote:
> If you reduce the ior, then, the reflection will also go down.
> 
> The minimum reflection is to high at 0.2.
> Try :
> reflection{0, 1 fresnel}
> or simply
> reflection{1 fresnel}
> 
> Try this interior :
> interior{
>   ior 1.5
>   dispersion 1.05
>   fade_colour Col_Ruby fade_distance 0.1 fade_power 1001
> }
> 
> Col_Ruby is the same as Col_Glass_ruby but without the filter component.
> 
> With this pigment :
> pigment{rgbt 1}
> 
> 

The dispersion really causes the render times to increase. I don't know 
if I have the patience.

Mike

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