Its an excellent lens, you cant go wrong with it. pros ? already metioned by all, DOF control & bokeh is excellent, can be used as portrait lens too.
Only con that comes to mind is slow AF in macro range & low light, but then the lens has full time internal manual focussing, so its not a issue at all. Outdoors AF is fast enough.
Color saturation, sharpness, contrast, just excellent.
A sample @ f3.5, iso 400, handheld
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