Thanks Troy, for your informative response, from what I can gather the AF is good across the full range.
However I have a good friend in the Camera and Lens business at Ballarat Camera House who I will be visiting tomorrow and I will see what his opinion is on this particular Lens.
I will be taking my Canon Body with me and will be able to actually shot with it and take home the results.
Also from my research it is stated that the Contemporary Lens of this size and model is quite different to the Sports model, which is of a heavy robust construction, a little bit larger in in diameter and length, and apparently water/oil resistant on both the front and rear elements.
Thank again.
Leon
