I was able to capture this image of a Hover Fly (Toxomerus marginatus) while roaming my backyard to try out my Canon 180 macro. The Bulbous Buttercup (Ranunculus bulbosus) flower is about 3/4 of an inch wide.
Cropped a bit off the right side. Desat the yellows. C&C greatly appreciated.
Canon 40D
Canon 180mm f/3.5L Macro + 1.4 TC + 75mm Ext. Tubes
1/200s f/11.0 at 252 mm iso400
No flash