Top positive review
109 of 111 people found this helpful
Perfect for travellers
on 21 February 2011
I bought this for one reason. When travelling, I was forever missing shots whilst fumbling to change from the wide angle kit lens to my Sigma telephoto. This lens gives you the complete range of the two so you don't have to miss a shot without the risk of dust getting into the camera body while exposed.
Purists will argue that there are lens aberrations at the extremes of wide-angle and zoom. This may be true, but for the majority of users this will not be an issue and is more than compensated by the ability to do it all out of one lens. After all if you miss a shot because of changing lenses, lens aberrations are irrelevant. I cannot see any defects in the shots I have taken.
Others have spoken about the lens extending under its own weight, and this is true. However, you quickly learn to carry the camera by the lens or flick the zoom lock switch on /off with your middle / third finger so this really is not an issue.
In addition, the image stabilisation built into the lens can also sharpen images, reducing the need for a tripod - although that's still a necessity for extreme zoom and low light. Finally your camera bag will be a lot lighter, because you can leave the separate wide angle and zoom lenses behind. This lens is now permanently on my camera (Canon EOS) 450D.