Buy! 9

Have the glass for my VF Nikon bought was rather skeptical, since I as a profession. Image editors put extreme emphasis on focus and resolution. And only high quality lenses used. But for trips abroad my 400mm 2.8 is just as unwieldy as my 200-400mm 4.0 (that goes). A compromise between weight / size was needed. As was (even under NP) offered me the Tamron, I bought it - and was / am very surprised.
First: a comparison with the fixed focal lengths of 5 or 600mm, it does not stand up, but that was not to be expected, even in the brutal sharpness of my 17-years old 400 2.8 it does not come close to the 200-400mm 4.0 does not - but the old 400 glass weighs just 7kg example! Without stand: None. But these are not the objects of comparison, about which one must talk. The benefits of the Tamron are clearly in low weight, the unbeatable price and an amazing image quality that significantly increases when stopping down - although the open aperture brings very good results. For best results, there is between F6.3 and F9. Very good also the not fast, but very quickly focusing end AF, which also "sits". The slight vignetting is not a problem for a Bildbearbeitungsprog. Many tests have also helped me to realize that the glass a bit under 600mm sharpest maps, ie, at approximately 550-580mm.

The build quality is very good all around, the stop however is to be locked only at 150mm - the same focal length, the Sigma over the whole range of time (also costs twice). As a landscape photographer I use almost always a tripod and this is strongly recommended when Tamron also in connection with the VR and SVA. Handheld shooting at 1/1000 are largely out of focus, the committee is already considerable. But with a lot of practice, a steady hand and the correct settings and the works, sometimes even very good, here the excellent working VC really helps. Another advantage is the use of a camera which allows VERY high ISO noise-free, since the modest but light intensity at LOW. ISO only allows shooting in optimal lighting conditions. Therefore: Tripod and SVA, remote release also highly recommended.

As a conclusion can be noted: the Tamron is measured by the price a hammer member that even those who no 8-10,000 can spend on a big Tele / want, opens up the possibility to take pictures with a long focal length and good to very good pictures Generate. For the journey with not a lot of luggage an ideal travel companion, the zoom range is ideal for wildlife photography, the minimum focus distance is under 3m class. It is definitely not a reportage glass (of the hand) and also for fast-moving subjects only appropriate when the body extremely high ISO allows for a very short exposure time and using a telephoto Eiger / fluid head etc.. Here you should definitely off the VC, which is also recommended to the tripod for landscapes.
From my perspective: strong buy recommendation
The small sample photo was taken from about 3m away, Tungsten, F8, 1/6, ISO2000, tripod, SVA, remote release, VC from