this lens allows you to enter a whole new world of photography, night photography without flash. i have tried both the 24-70L and the 17-55m and felt very limited once the sun starts to set or moving in doors. IQ is stunning, especially the colors.
-sharp; sharp; sharp ( between 1.4- 2.8) -construction is top notch -bokeh is silky smooth (was never a priority in the past for me; but after seeing the results thats all i think about -superb in low light situations
-price; price; price (will not be buying any new lens soon; but maybe i will not have to with this lens) -attention getter (might be a pro for others