I totally agree with this response. I use my 17-55 F2.8 on a 40D for weddings and it's my main lens. I back it up with both the 85 F1.8 and the 50 F1.4 for moody candids in low light but the workhorse is the 17-55. It is the sharpest zoom in this range I've ever used including the 17-40 F4L, the 24-105L and the 16-35 F2.8L.





Jim