Le 2025-10-17 à 16:20, Bald Eagle a écrit :
> Alain Martel <kua### [at] videotronca> wrote:
> 
>> Fresnel reflection for a metal ? Fresnel is for objects that have an IOR
>> and are not metals.
> 
> I recall reading that accurately rendering metals required an IOR.
> Maybe not for current POV-Ray though.
> 
> https://www.behance.net/gallery/35636521/Material-Studies-Metals
> 
> etc.
> 
> - BW
> 

And the IOR of metals tend to be complex numbers.

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