Thread: Scribblings
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Old 07-26-2008, 05:30 PM   #316
Sparrow
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Join Date: Nov 2007
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Quote:
Originally Posted by Taylor514ce View Post
It's HARD to draw "accurately", with the proper shading, and mentally mapping colors to grays and grays to shades of grays...
Apparently, it's very hard for humans to judge relative shades.

I love this optical illusion, which demonstrates the idea:
http://web.mit.edu/persci/people/ade..._illusion.html
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