- Features a large aperture of f/2.8 at the 300 millimeter focal length
- Multi-layer lens coating and lens design reduces flare and ghosting
- Features SLD (Special Low Dispersion) glass elements for superior correction of chromatic aberration
- Hyper Sonic Motor (HSM) for ultra-quiet shooting
A telephoto zoom lens, which retains a constant fast aperture of F2.8 at all focal lengths. 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 position. 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 ensures a quiet, high-speed, AF as well as full-time manual focus (for Sigma, Canon and Nikon mounts).