For me, the Tamron has a Nikon D3200 as opponent and the two harmonize overall very good. You have to see the lens as a compromise and for that it covers a very wide range of focal lengths, it is also excellent. Even in the most extreme positions (18mm and 270mm) is the focus still ok although from about 240mm a drop in overall sensitivity occurs. I had previously a Sigma 18-200 and fell there from much stronger and was only partly available in the telephoto range. The Tamron can use over the entire focal length. A major criticism is that specified by Tamron macro, it but as good as not fit for macro shots. The minimum distance is quite high and if you then use the telephoto end, the attempts to compensate, camera shake is almost impossible to prevent, and the target is even still quite small. The focus is on short distance is also not satisfactory, so you can forget about macro shooting actually with this lens, even with manual focus and tripod rather frustration is there announced. For that extra-draufsteht and the corresponding result is insufficient, I think that's a little sham. Those looking for a lens for absolutely everything (and macro), which is out of place here, unfortunately. But at this price range, I guess you can not seriously expect the. The remaining disciplines mastered the objective (as I said, for its price range) really properly. The perfect travel lens where you have room for only one objective, or has no desire to continually switch back and forth. The enormous focal length variability surprisingly been reflected neither in a high weight, even in enomen extents back negative.
A fair price for a lens so that almost all requirements has grown and (still) compact and light enough to carry around constantly.
Due to lack of macro function a star deduction. Otherwise: excellent value for money.