[Jewelry making - Article 00149] - Re: [Orchid] Photographing opals

[David J McIntyre]

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Kevin,

    The flash of an opal's color will vary enormously as you vary the
    angle of illumination vs the angle of observation. In short you
    would probably like the results if your illumination and observation
    were coaxial. This would automatically be the case if you were using
    a surgical microscope with internal illumination, and you might even
    find the most pleasing results if only a percentage of the
    illumination is coaxial. 

    Give me a call (206 954-4166) and I'll try to give you some ideas of
    how the accomplish it. 

Dr. Mac
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