In brief: Optics top AF well

The picture quality is really great and I now have a lot of experience with lenses 80-1500 Euro. It ends up for me this Tamron clearly in the imaging performance in the league, which usually costs about twice as much. With 2.8, it is also sufficiently bright. Can also be used as a portrait lens super. If you use it on a high resolution camera like the Sony SLT 65, you can even use it as no less than medium telephoto and receives in excerpts nor a crisp, sharp image. Moreover, the distinguished objectively a wonderful bokeh. (1.4 Sigma 85mm compared with the only slightly worse)

However, the autofocus is a little lame contemporary, especially in low light or in confusing macro situations he can make an already insane, since it is only: to change manually, just in the macro range, the photographer knows better anyway, what he wants to focus. In this respect, can live without that.

Conclusion: optics 7 star, AF 2 stars, making an average of 4.5, but I like to round 5, because the appearance is more important for me.