Sigma 120-300mm F2.8 AF EX IF HSM | $1698.95 | |  |
A telephoto zoom lens, which retains a constant fast aperture of F2.8 at all focal lengths.
Sigma APO 120-300mm F2.8 EX IF HSM is one of several new products introduced at Photokina 2002 by Sigma Corporation of Japan (2-3-15, Iwado-Minami, Komae-shi, T
okyo, Japan).
This telephoto zoom lens has a large aperture of F2.8 that is constant throughout the zoom range. The angle of view of the 120-300mmF2.8 varies from 20.4degree to 8.2degree and offers great versatility of composition from a fixed positio
n. Two Special Low Dispersion (SLD) glass elements in the front lens group and two in the rear group offer effective compensation of color aberration. Since focusing and zooming do not change its overall length, this lens offers ease of handling. HSM ensu
res a quiet, high-speed, AF as well as full-time manual focus (for Sigma, Canon and Nikon mounts). A removable tripod collar is provided with the lens. As the front of the lens does not rotate, circular polarizing filters can easily be used. When this len
s is used with the 1.4x EX or 2x EX Apo Tele Converters (optional), it becomes a 168-420mmF4 AF telephoto lens or a 240-600mm F5.6 AF ultra-telephoto lens respectively. The lens materials used in this new lens are lead and arsenic free ecological glass.
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