It surprises me that you don't find this lens sharp. I found it to be very sharp on my XTi, but when I got my 50D I was a bit disappointed, it seemed a bit soft until I used the microfocus adjustment. I found that the combo of my 50D and my 24-105L was front-focusing. After adjusting the camera to a +7 for the lens, I am getting pics just as sharp as with my XTi only with much better resolution, detail, and color.


Does your camera have autofocus micro-adjustment?