Love the working distance that this close-focusing superzoom allows at bigger bugs. The OS helps in hand holding too. 
40D + Sigma 18-200 OS + 12 mm ET, 200 mm, f/9, 1/200 sec, ISO 320, AI servo, hand held, manual exposure in available light (side lighting from early morning sun):
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And a processed 100% crop:
http://www.pbase.com/liquidstone/image/98682902
My 100 2.8 USM macro is of course sharper, but it can't shoot wide angle either.

Romy


