This is a sample photo taken with the Sigma 10-20mm f/4.5-5.6 zoom lens, at PMA. The lens was a preproduction model so may not be working at 100%. The autofocus worked great, but the flash metering was questionable, as you can see. Conditions weren't optimal either. The photo was taken using my Canon EOS 10D at f/8.0, ISO 400 @ 1/20th second.