聚焦系统
| 内部对焦（IF） |
Y |
| 最近聚焦距离 |
0.38 m |
| 镜头安装接口 |
Canon EF |
| 光阑叶片数量 |
9 |
| 非球面元件数目 |
3 |
| 对角线视角（最小） |
34.3 ° |
| 对角线视角（最大） |
84.1 ° |
| 焦距调整 |
Auto/Manual |
| 最小光圈 |
2.8 |
| 最大光圈 |
22 |
| 组件应用 |
SLR |
| 焦距 |
24 - 70 mm |
性能
| 最大放大倍率 |
0.19 x |
| 超声波马达（USM） |
Y |
24-70mm f/2.8 EX DG HSM
Compact large aperture standard zoom lens equipped with HSM for the latest digital SLR cameras.
This large aperture standard zoom lens covers focal lengths from 24mm. The latest optical design provides a compact construction and is ideal for general photography. ELD (Extraordinary Low Dispersion) glass, two SLD (Special Low Dispersion) glass elements and three aspherical lenses provide excellent correction of all types of aberrations. This lens incorporates HSM (Hyper Sonic Motor), ensuring a quiet and high speed AF as well as full time manual focus capability. It has a minimum focusing distance of 38cm/15in and a maximum magnification ratio of 1:5.3. The rounded 9 blades diaphragm creates an attractive blur to the out of focus areas.
Excellent optical performance
ELD (Extraordinary Low Dispersion) glass, two SLD (Special Low Dispersion) glass elements and a molded glass aspherical lens provide excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range.
Large aperture standard zoom lens with a compact construction
The lens has a compact construction with an overall length of 94.7mm (3.7”). It is ideal for many situations such as portrait, landscape and general photography.
F2.8 large aperture throughout the entire zoom range
This lens offers a large aperture of F2.8 throughout its entire zoom range. It provides freedom of creative expression and is ideal for photography indoors or in low light.
HSM (Hyper Sonic Motor)
HSM ensures a quiet and high speed AF as well as full-time manual focus override by rotation of the focus ring.
Inner focusing system
The inner focusing system eliminates front lens rotation as well as providing high speed AF and convenient handling.
Rounded diaphragm
The rounded 9 blade diaphragm creates a soft, attractive blur to the out of focus areas of the image.
Reduced Flare and Ghosting
The super multi-layer coating reduces flare and ghosting and provides high contrast images throughout the lens’ focal length.
Petal Type Hood
This lens is equipped with a Petal-type hood to block out extraneous light and reduce internal reflections.
