Alain wrote:
> Maurice nous apporta ses lumieres ainsi en ce 2005-01-02 10:30... :
> 
>> Alain wrote:
>>
>>> Maurice nous apporta ses lumieres ainsi en ce 2005-01-02 04:37... :
>>>
>>>> Hi,
>>>>
>>>> I have this blob made up of 5000 glass spheres inside a spherical 
>>>> HDR. [blabla...]
>>>> }
>>>>
>>>> I can't find out what is wrong. Any suggestions are welcome.
>>>>
>>>> ------------------------------------------------------------------------ 
>>>>
>>>>
>>> What are the photons settings for the floor? Does it collect them?
>>
>>
>>
>> The floor:
>>
>> plane{ <0,1,0>, 0
>>   texture{
>>     pigment{checker color rgb<1,1,1>*1.2 color rgb<1,1,1>}
>>     finish{ambient 0.1 diffuse 0.8 metallic reflection{0.9}}
>>   }
>>   no_radiosity
>> }
>>
>> It has no photons section...
>>
> No photons section = collect on  target off  OK
> Then, it may be that the high reflection value (0.9) make them almost 
> invisible. The more reflective a surface is, the less it will show 
> photons effects. That's the main reason why it's recomended to set 
> collect off for highly reflective surfaces.

I think you might be right. When I switch off the reflective finish of 
the floor I see a hint of caustics on the floor. Is there any way to 
increase the strenght of the caustics? Can't seem to find anything in 
the manual that promises to do this. I found the caustics keyword for 
interior but whatever value I use it doesn't seem to give the right effect.

-- 
Maurice

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