dpreview
Conclusion - Pros
■Huge 16.7x focal length range (while maintaining F5.6 aperture at telephoto)
■Good image quality in the wide to short telephoto range
■Fast, quiet autofocus
■Good build quality, smooth zooming action and no zoom creep
■Decent close-up capability
Conclusion - Cons
■Very soft results at telephoto
■Extreme distortion across most of the range (but can be corrected in-camera with recent SLRs)
■Image stabilization not as effective as on similar lenses, especially at telephoto end
■Flash shadowing at wideangle on smaller SLRs
■Large, heavy and expensive compared to other superzooms
Conclusion - Pros
■Huge 16.7x focal length range (while maintaining F5.6 aperture at telephoto)
■Good image quality in the wide to short telephoto range
■Fast, quiet autofocus
■Good build quality, smooth zooming action and no zoom creep
■Decent close-up capability
Conclusion - Cons
■Very soft results at telephoto
■Extreme distortion across most of the range (but can be corrected in-camera with recent SLRs)
■Image stabilization not as effective as on similar lenses, especially at telephoto end
■Flash shadowing at wideangle on smaller SLRs
■Large, heavy and expensive compared to other superzooms