Basically, the lens gives a very sophisticated look which is also confirmed in the use. Technically everything works without problems.
AF, MF and loooong focal length make (at least to me), however, only after some practice pleasure.
Especially focusing on distant and thus possibly small goals must be learned because the image stabilizer (if any) inserted in the camera and the target at long focal length wobbles supposedly strong. Of course it is not the goal, but the restless photographer.
I use the lens eg for animal photography, especially here some was required to exercise. The autofocus needs even with my E3 neat light, here helps prefocusing at shorter focal length, extending to full focal length and short refocus on the eyes. I can imagine that a monopod is very helpful and will try that.
Macro photography functions in resting motifs sensational, on moving subjects I produce> 50% Committee, it is improving slowly but.
On holiday I have photographed surfers (surfers), in this case I had at the end of about 30% focussing errors. The quality increased with increasing exercise.
In general, the quality of the images is mE regarding sharpness, distortion, etc. very well. For the content of the lens can not help.
Conclusion
Despite my difficulties described above, I give full 5 stars, not least because of the very good price performance ratio.
With increasing use of the lens, the pleasure increases the steady improvement in earnings. I advise everyone to only detail to address the objective and if necessary to see the possible initial failure as an incentive. The reward is so nice after some practice. I am an amateur photographer.