聚焦系统
最大光圈 |
32 |
焦距 |
120 - 400 mm |
对角线视角(最大) |
20.4 ° |
最近聚焦距离 |
1.5 m |
光阑叶片数量 |
9 |
图像稳定器 |
Y |
120-400mm f/4.5-5.6 DG OS HSM
Telephoto zoom lens incorporating Sigma’s original Optical Stabiliser
<b>Optical Stabiliser</b>
This telephoto zoom lens incorporates Sigma’s original OS (Optical Stabiliser) system. It offers the equivalent of using a shutter speed approximately 4 stops faster.
<b>Incorporated with SLD Glass</b>
Three SLD (Special Low Dispersion) glass elements provide excellent correction for chromatic aberration. This lens is equipped with the rear focus system that minimises fluctuation of aberrations caused by focusing. It provides optimum image quality throughout the entire zoom range. The super multi-layer lens coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range.
<b>Minimum focusing distance of 150cm </b>
The minimum focusing distance of 150cm throughout the entire zoom range and has a maximum magnification of 1:4.2 make it useful for close-up photography.
<b>HSM</b>
This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focus override.
<b>Compatible with Sigma APO Tele Converters</b>
The addition of the optical 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 168-560mm F6.3-8 MF ultra-telephoto zoom lens or a 240-800mm F9-11 MF ultra-telephoto zoom lens respectively.
(See the Compatibility Table for information.)
<b>Detachable tripod collar</b>
A removable tripod collar and matched lens hood is included as a standard component.