55mm, f/5.6, ISO 100
Here you can find a 100% crop of the original image.
The EF-S lens that has had some full frame users jealous for a while.Not the educated ones, who would know that the EF-S 17-55mm f/2.8 IS on a crop body is out-spec'd by the EF 24-105mm f/4L IS used on FF, since the FF-equivalent of 17-55mm f/2.8 is 27-88mm f/4.5 (becuase the crop factor affects aperture in terms of DoF for equivalent framing), and the 1-stop effect on shutter speed is more than compensated for bu the 1.33-stop improvement in ISO noise with the additional light gathering ability of a FF sensor). So, the 24-105 on FF is wider, longer, and faster than the 17-55mm on crop, still has IS, and is weather-sealed with L-quality build to match.
I think what they mean by making FF owners jealous is that the closer equivilent lens would be the 24-70 2.8 which lacks IS.. Because if they added the IS to that lens, that would be the choice for a all around lens for FF bodies.