| A revolutionary, ultra-high-magnification zoom lens
offering the highest magnification of any interchangeable zoom lens for SLR
cameras available at the time. This lens enables hand-held shooting from
wide-angle 35mm to super-telephoto 350mm. The optical system features a six
lens group construction with five movable lens groups, achieving a high zoom
magnification in a lens nearly as compact as the EF 70-200mm f/2.8L. Two UD
(Ultra-low Dispersion) glass lens elements (2nd and 3rd) in the first lens
group thoroughly eliminate chromatic aberrations at telephoto focal length,
realizing the high image quality befitting an L series lens. The rear
focusing system drives the small, light-weight 6th lens group by a ring USM
(Ultrasonic Motor), enabling quiet, high-speed AF and full-time manual
focusing. Shooting at a minimum focusing distance of approx. 0.6m is
possible at any focal length from 35mm to 135mm, with a maximum macro
magnification of 0.25X obtained at 135mm position. Operation of the lens is
fast and smooth with its linear zoom system design, wide manual focusing
ring, and highly-efficient, petal-shaped lens hood. (more...) |
