Canon's APS-C superzoom covering a wide 29-320mm equivalent range with IS.
The Canon EF-S 18-200mm f/3.5-5.6 IS was released in 2008 as Canon's APS-C superzoom for EF-S bodies, providing a 29-320mm equivalent range in a single lens. The ring-type USM motor enables quiet autofocus independent of the body's AF drive motor. Image Stabilisation at 4 stops extends handheld capability at the telephoto end. It was designed for photographers wanting a single-lens solution covering wide to telephoto without a lens change — a travel and everyday all-in-one approach. The 11.1x zoom range requires optical compromises typical of superzoom designs.
The optical design uses 16 elements in 12 groups, including two UD elements and two aspherical elements. Six rounded aperture blades produce smooth out-of-focus rendering. The 72mm filter thread requires a dedicated filter set — different from the 58mm of the 18-55mm kit lens and the 67mm of the 18-135mm. At 595g the lens is substantial for a single-lens travel kit; the 11.1x zoom range accounts for the weight. Minimum focus distance of 0.45m suits the telephoto use case. IS provides 4 stops of shake compensation, extending handheld telephoto capability. Variable aperture runs from f/3.5 at 18mm to f/5.6 at 200mm. Ring USM provides fast, silent AF with full-time manual focus override.
As an all-in-one travel superzoom the 18-200mm IS eliminates the need for a lens change between wide, standard, and telephoto subjects. The 29-320mm equivalent spans environmental landscape through telephoto compression for outdoor events and travel subjects. IS at 4 stops extends handheld capability at 200mm in variable light. Optical quality is adequate for general travel photography at mid-apertures; the compromises typical of 11.1x zoom designs are most apparent at focal length extremes and wide open.
On the used market the EF-S 18-200mm IS is widely available at affordable prices. Condition checks: ring USM response, IS engagement, zoom ring smoothness across the full range, and front element for any marks. The 72mm filter thread is larger than most EF-S kit lenses — a dedicated filter kit is required. The Canon EF-S 18-135mm f/3.5-5.6 IS STM provides better optical quality at reduced zoom range with a quieter STM motor for video. Compatible with all Canon APS-C EF-S DSLR bodies and via EF-RF adapter on RF APS-C bodies.