Despite its good build quality and handling, it's also not a lens for hyper focusing, everything just goes soft... At close focus limit, center sharpness is only okay from f4 and corner sharpness is good from f5.6. Focused to infinity, it's much better and performs similar to 28mm f2; image quality is already good at f2.8 (except for the extreme corners) and good from f4. At this setting, the 24mm f2 outperforms the 18-35mm significantly. Test on the full frame camera shows that f2 is already usable setting at distance of 0.7m. This lens weighs 300g. I've grown fond of this lens recently; clearly it's not one of those legendary performers, but within its limits it performs beautifully. For example, large aperture settings are good at close range (with nice bokeh) if you have one main subject only (portrait of one person), because the curvature of the field will render other parts of the frame unsharp. Shooting landscape is no problem unless you want do it with f2.8 or wilder. Bear those limitations in mind you should be happy with this lens.