One of my favourite lenses, way back in the days of film, was Canon's 100-400mm zoom. It was just that bit longer than the popular 100-300mm zooms of the time, and also just that much better quality.
However, when digital arrived, I found that my camera sensors were out performing the lens and compared with my 300mm f2.8, it simply wasn't in the same league. Then I discovered that the push-me, pull-me zoom action was the quickest way to cover my sensor in dust that man (or camera manufacturer) had devised, working like a large bellows.
So when Canon announced its latest version of this lens, the first thing I checked was the zoom action and I'm happy to report it is rotational rather than linear!
The new EF 100-400 f/4.5-5.6L IS II also has a completely redesigned optical structure and an improved 4-stop optical Image Stabilizer to reduce the effects of visible camera shake on long-distance shots, with three IS modes tailored to most typical shooting conditions. The lens also includes an improved dust and water-resistant construction, while fluorine coatings on the front and rear lens elements reduce the likelihood of dirt sticking to the lens surface and creating pesky spots to remove in post production.
For more information, visit Canon's website at www.canon.com.au.