Comments about Sigma Sigma 180mm f/3.5 EX DG APO Macro (1:1) IF HSM Digital AutoFocus Telephoto Lens with Hood for Sigma Cameras:
A fabulous macro. Provides great working distance over a 90-105mm macro lens. Great build quality and super sharp. Autofocus can be slow when greatly changing object distances, but that is true for all long-length 1:1 lenses. I moved from EOS to Sigma after being impressed with the 3 Sigma macro lenses, and winning an SD10 Sigma body in a photo contest - and I love the new SD14 camera, too. Sigma cantr be beat for price/quality factors together.