Adjusting the max trace level didn't change the effect. It appears that surfaces
that run parallel to the light source causes the greatest discrepancies. It is
as if the ray runs along these surfaces and thus bypasses attenuation effects of
the material.

I have found that at lower surface transparency (.9 transmitance instead of 1),
the effect is greatly diminished. This causes other effects that aren't ideal
but the images could be used as necessary.

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