This high grade telephoto zoom lens responds to the exacting requirements of professionals & advanced amateurs, yet at a reasonable price. One artificial crystal fluorite & two UD (Ultra-low Dispersion) glass lens elements in its optical system eliminate secondary spectrum, which is often the Achilles' heel of telephoto lenses resulting lower picture quality. These elements assure high resolution & high contrast throughout the entire zoom range. The latest optical design gives a minimum focusing distance of 1.2m & 0.21x maximum magnification. This lightweight, compact zoom lens, having the same level of optical performance as EF 70
- 200mm f/2.8L USM, assures good portability & operability. The ring USM (Ultrasonic Motor) & inner focusing system achieve high-speed silent autofocusing. Manual focusing, even while in AF mode, is possible thanks to full-time manual focusing mechanism. Extenders EF 1.4X & 2X can be used with this lens, & the optional Ring Tripod Mount A (W) is being marketed concurrently.