Reviews are often blessings and curses in one. By reading this reviews you will always uncertain what possibly is even suitable for the product for one, even the best. I opted for the Tamron and now tested for 2 days at different weather conditions and requirements. As Kamrera served my Nikon D2X. In cooperation with the Nikon has a "heavy right Klopper" in hands. I call myself sometimes as a dedicated amateur photographers, with technical terms, I have little hat on, but sometimes get very good photos out. Also this upper bearing term "Shard" will save me or us. I bought this lens here on Amazon; as always fast ..gut ... unproblematic! For objective: it is a really big part, well-balanced. My results are very good. Exposure fits; as some here to read no underexposure. Autofocus is fast and reliable. No back and herpumpen determine. The image stabilization is amazing ... he freezes the subject practically. (I write here not aware of 1/4 sec. Shutter times when I think something is nonsense, and digital photography has its laws. In 300mm with 1/4 sec. To photograph sharp, is a godsend, no more no less. The lens is over the entire focal length range very sharp, even at Offner aperture and even at 300mm; mushy expectant image edges I can not determine. Processing I find very good. We are talking about a "suppliers lens" in the price range around 300 Euros. Hardly anyone will be able to two Obkektive 1: 1 to test ... same Motiv..gleiches light .... same .... camera trigger possible 2 cameras on tripod .... photo at the same time ... I have for example the Nikon 55-300mm never held in the hands, or even worked with it. To my knowledge, rotate the lens hood with ?! After 2 days, with the Tamron I certainly have no desire to want to try something different or even need to. For me "fits" the Objetiv ... gorgeous as you can play at 300mm with the edge.
Unrestricted buy recommendation from me + my Nikon D2X