S t e
p 8 :
Bias
Some strange patterns appear sometimes
in the shadowy area, when Bias is set to a low value and when the range
between ClipSta and ClipEnd is low (as is usually recommanded). To prevent
this, you should always set Bias to the highest value possible.
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Bias set to 0.01
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Bias set to 1.00
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Bias set to 3.00
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Bias set to 5.00
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The patterns are clearly visible when Bias
is set to 0.01 and are progressively smoothened when this parameter is
increased. It's hard to tell at all if there's a pattern in the rendering
with the Bias set to 3.00, but the picture seems to be a little darker
than the one with Bias set to 5.00. Confused? Nevermind! Set Bias to 5.00
without even thinking about it!
Final conclusion
You are now deeply familiar with casting
shadows within Blender. Given time, you will play with light and shadow
concepts without even thinking about it, and enhance the quality and realism
of your pics by 100%. But before that, stay simple and straight-forward:
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Try to set all your SpotSi within 45.00 and
60.00 degrees values, avoid setting them above 90 degrees
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Set Samples to 5
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Try to set BufSi to 768 or 1024
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Set the range between ClipSta and ClipEnd
the smallest possible
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Set ClipSta the highest possible
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Set Soft to 3.00
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Set Bias to 5.00
Happy blending!
