Review by Klaus Schroiff, published December 2007

Lens kindly provided for testing purposes by Rob (NL)!

Introduction

Canon may have changed the finish for a better look but the principal build quality of the lens remains in line to its price class - reads: the plastic quality is still not overly impressive although it's slightly better compared to its non-IS cousin. The worst aspect is the inner lens tube which wobbles significantly. The fluted front portion of this inner tube is meant for manual focusing - really more a theoretical idea because accurate manual focusing is a nightmare. The lens extends slightly towards the extreme ends of the zoom range - its shortest physical length is reach around the 24mm settings. The front element rotates so using a polarizer is difficult at best. The optional hood is tiny and not overly efficient but still better than nothing.

The AF speed and accuracy is actually pretty good and the noise level during operations remains on a very low level. According to Canon the newly developed Image Stabilization system is good enough for a "gain" equivalent to up to 4 f-stops. That's a little bold in my opinion - during the field tests it gave me a more or less reliable gain of about 3 f-stops but that's already impressive enough. Unlike earlier IS implementations the new variant is capable to detect object panning so there's no need anymore to switch between a mode 1 and mode 2 in order to select the IS strategy (static scene or panning).