3] When does one get good enough so that they don't render ugly pictures!
Practice with a simple objects (to cut down trace time) over and over and over. Varying lighting & color etc. This will allow you to get the effect you want which is only a technical problem.
(EMAP Images)(GB)[!][issue 1998-01].iso/CUCD/Graphics/ImagineFAQ/Owl_bar.gif)
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