Canon EOS 40D EF17-40mm f/4L USM 1.3 sec at f / 18 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/40 sec at f / 18 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/25 sec at f / 16 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/25 sec at f / 16 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/100 sec at f / 14 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/60 sec at f / 16 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/25 sec at f / 16 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/6 sec at f / 16 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/5 sec at f / 16 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/6 sec at f / 16 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/8 sec at f / 16 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1.0 sec at f / 20 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 1/2 sec at f / 18 on October 11, 2008

Canon EOS 40D EF17-40mm f/4L USM 3.2 sec at f / 22 on October 11, 2008