I therefore can not understand the widely read negative reviews. Anyone who knows a little about photography, knows that super zooms, and that faint Lenses now not come close to the high-intensity special lenses again. They are always a compromise.
Who such super zooms still buys and is then disappointed because he of a "VW Golf" the performance of a "Lamborghini" expected and they do not receive, which is really your own fault!
It is true that the lens is not excessively bright. Also, the stability does not always help in low-light situations.
Knowing this, one must use the Tamron precisely targeted: landscapes and close-ups with a tripod. Animals with sufficient light and with stability. Cities & architecture as well.
I had it for 3 weeks in Canada with and had previously photographed on smaller trips va landscapes and birds. Here, I really many spectacularly good and sharp images succeeded: With gray skies several eagle in flight (Mitzieher) - extremely sharp. Magnificent landscapes in wide angle - brilliant. Waterfowl, buildings, bear, etc. All hinbekommen top.
The zoom range is huge. Only at 18mm or 270mm you should be careful: Dear one small step away from these extreme ranges. Since the sharpness suffers a bit.
What is really annoying is that the lens in buck / boost consumer raus or reinkriecht. Here you can use a tripod. One must hold it. Not so great. But even that I had read and knew beforehand. And therefore consciously accepted this weakness.
I own several very high-quality special lenses the pro class. And yet this has become my favorite all top lens. I have learned to deal with his weaknesses and me adjust. And it will therefore continue to use in the future when my sole travel lens.
It's just very versatile, has small pack size and price for the offered variety simply top.
I would highly recommend it!
