I am attempting to render gemstones with dispersion and have run into some
difficulties using PovRay v3.5.
In the finish statement I set the reflection color_reflection_min to the
square of (ior -1.0) / (ior + 1.0), the color_reflection_max to 1.0 and
turned on fresnel.
According to the help file when the amount of reflected light changes, the
amount of transmitted light should also change. To achieve this
conserve_energy keyword was added to the finish statement.
In the interior statement is the ior value and dispersion and its value.
When the gemstone is rendered there are hundreds of unwanted turquoise
colored spots.
How do I conserve energy and have dispersion without the turquoise spots?
Dick Conley
dic### [at] localaccess com
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