Reviews and Problems with Canon EF-S 18-200mm f/3.5-5.6 IS
Showing 1-4 of 4
Value for money 7
Picture quality 7
Build quality 8
11 May 2010
Conclusion: The EF-S 18-200mm F3.5-5.6 IS is a lens which many Canon users have been waiting for with great anticipation, as an ideal 'all-in-one' lens for travel and 'walkaround' use. In the flesh it behaves much as we'd expect from such an ambitious design, as an 11x zoom range will always necessitate some fairly major optical compromises.
Pros: Huge 11x focal length range, ideal general purpose and travel lens, Excellent image stabilization system, consistently delivering three to four stops benefit, Good central sharpness at all focal lengths (but inconsistent corners), Attractive rendition of out-of-focus regions of the image, Improved build quality in comparison to the 18-55mm and 55-250mm kit lenses, Well-placed zoom lock switch
Cons: Poor sharpness across much of the frame at 18mm and wider apertures, Pronounced barrel distortion at wideangle, and pincushion distortion around 50mm, High levels of chromatic aberration at either end of the zoom range
Excerpt: I have to admit, when i saw the initial Canon press release for the 18-200 IS, I was highly skeptical that this lens could produce even reasonable optical quality throughout the focal length (FL) range. Any FL range over 5x (max FL/min FL) raises a warning flag in my mind - you just know that there will be at least some optical deficiencies. And an 11x zoom lens is just begging for optical problems. The lack of a USM AF system raised a second warning flag.