聚焦系统
| 最近聚焦距离 |
0.98 m |
| 最大光圈 |
40 |
| 焦距 |
100 - 400 mm |
| 光圈范围 |
4.5 - 5.6 |
| 对角线视角（最大） |
24 ° |
| 对角线视角（最小） |
6.1 ° |
| 光阑叶片数量 |
9 |
| 组件应用 |
SLR |
| 焦距调整 |
Auto |
| 图像稳定器 |
Y |
| 最小光圈 |
4.5 |
性能
| 自动对焦致动器 |
USM |
| 最大放大倍率 |
0.31 x |
| 自动对焦 |
Y |
| 镜头遮光罩 |
Y |
EF 100-400mm f/4.5-5.6L IS II USM
<b>Versatile super-telephoto performance</b>
The EF 100-400MM F/4.5-5.6L IS II USM is ideal for photographers who are travelling light and want to take just one telephoto lens with them. A great choice for sports and wildlife photography – the 100-400mm zoom range puts you right next to distant subjects, and lets you react quickly in a fast-changing situation. When used on cameras featuring APS-C sized sensors, the EF 100-400MM F/4.5-5.6L IS II USM offers angles of view equivalent to a 160-640mm on a full-frame camera.
<b>Stay sharp, whatever the light</b>
The EF 100-400MM F/4.5-5.6L IS II USM delivers sharp, high-contrast images, using Fluorite and Super Ultra-low Dispersion (Super UD) lens elements to tackle artefacts and distortion. A three-mode Image Stabilizer guards against blur from camera shake, allowing handheld shooting with shutter speeds up to 4 stops slower than normal.
<b>Fear no flare</b>
Shoot into the light confident that Canon’s multi-layered Air Sphere Coating (ASC) will protect against flare, ghosting and reduced contrast. ASC uses a multi-layer coating to reduce reflections including a layer of nanosized air spheres deposited on the lens surface to slow down light more gradually as it enters the lens, this prevents the internal reflections that reduce image quality.
<b>Ergonomic handling</b>
Different photographers work in different ways. Use the Zoom Touch Adjustment ring to set the amount of resistance felt when zooming the lens: a light touch is ideal when you’ll be working quickly in a fast-changing situation. On the other hand, you might want to stiffen or lock the zoom mechanism when you don’t want the focal length to change accidentally.
<b>Fast focus when you want it</b>
Enjoy fast USM autofocus that locks on accurately and in near-silence. Full-time manual focus override allows precise adjustment without taking your camera away from your eye. The EF 100-400MM F/4.5-5.6L IS II USM focuses down to 0.98m, letting you react to subjects that come unexpectedly close.
<b>Protected from the great outdoors</b>
Keep shooting even in tough weather conditions. As an L-series lens, the EF 100-400MM F/4.5-5.6L IS II USM is sealed against dust and moisture, so you can keep shooting even when conditions turn bad. A fluorine coating on the lens’ front element repels dirt making the lens easy to clean.
