This Tamron applies to its unbeatable value for money. The accuracy of the stitched on the entire image is interesting. The development is relatively fast under normal conditions, but still quite noisy. The plastics used are ultimately more rewarding at first glance. However, there a slight flutter in the moving parts and focal stops are very steep (mild slam). The zoom ring is quite hard and somewhat fluid, but according to other testimony, is improving over time. The package offered by Amazon for such fragile products is insufficient: the cardboard target, already somewhat padded, literally floats in a larger carton. To improve transport conditions seen at the Post!