This lens can produce fine results when mounted on a stable tripod and for fairly static objects. I remove the light lenshood if possible and shot with a cable release. I think this lens is very sensible for shutter and lenshood vibrations. A beanbag put under the lens also helps.
I like the colours, the contrast, the soft bokeh and the pleasing sharpness of this lens.
Very difficult to get flying birds in focus caused by a slow AF an the lack of a focus limiter. It can keep on hunting. The MF ring is much to near the camera body and hence difficult to use.