Am 13.04.2017 um 13:40 schrieb Jim Holsenback:

> also (not /entirely/ unrelated) regarding variable reflection. it seems
> a bit threshold-ish ... that is: reflection { 0, 0.2 fresnel } doesn't
> give exactly what i'd expect but reflection { any-small-none-zero-value,
> 0.2 fresnel } does

Sounds odd to me. Can you post an example?

Theoretically, a polished surface should work best with

    finish {
      diffuse albedo 1
      specular albedo 1 roughness VERY_SMALL
      fresnel
      reflection { 0, 1 fresnel }
      conserve_energy
    }

and it should be possible to shorten `reflection { 0, 1 fresnel }` to
`reflection { 1 fresnel }`.

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