On 2024-10-30 08:41 (-4), Alain Martel wrote:
> 
> error_bound is acceptable for a scene using only radiosity illumination.
> If you use conventional light, then the default of 0.5 is sufficient.

The default error_bound is 1.8, although 0.5 is what I normally use.

> You should NOT use diffuse 1. It can cause some nasty side effect.
> Better keep the default value.
> So, change that #default to just :
> #default{finish{ambient 0}}

What sort of side effects?  I sometimes use diffuse 1, for example, with
spectral rendering, but when I do, I use darker pigment colors.  I have
never seen problems unless the diffuse times a color channel value was
greater than 1.0.

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