Attached Link: The Importance of Being Linear

...there's a pretty good coverage of the GC topic as well (see link).  There are example images  in there that look like tons of images you can find in the Poser galleries (various problems related to non-GC, resulting in either too dark or attempts to 'fix' that by simply increasing the lighting levels, etc) - but more to the point is.. a good explanation of 'why' GC is needed.

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