For example:
Orig.tif has up to 4095 unique color values.
Code: Select all
convert orig.tif -fx 'intensity/16' dithered.tif
Code: Select all
convert orig.tif -depth 8 new.tif

I've tried a lot of things with the same result. The part that gives me some concern that this may be a bug is that when I try to convert the dithered.tif using -depth 8 it is the same as out.tif.
Any assistance would be greatly appreciated!
~Cameron
The images:
http://dl.dropbox.com/u/222088/orig.tif
http://dl.dropbox.com/u/222088/dithered.tif
http://dl.dropbox.com/u/222088/out.tif
Version: ImageMagick 6.5.8-2 2010-02-22 Q16 http://www.imagemagick.org
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