Alex shot this very nice series of fungi images with his newly-acquired Sigma APO MACRO 180mm F3.5 EX DG IF HSM macro lens.
Click here to view a larger version of the images and read the related forum thread.
Also note Alex’s mention of the greater working distance due to its 180mm focal length.
Macro lenses with long focal lengths are ideally suited for bug photography because you needn’t get as close to the bugs to get the shot, as compared to, say, a Nikkor 60mm macro lens.
Hopefully, we’ll get to see bug shots with his lens when the weather gets warmer.