聚焦系统
| 最近聚焦距离 |
0.25 m |
| 光阑叶片数量 |
5 |
| 对角线视角(最大) |
94 ° |
| 最大光圈 |
22 |
| 固定焦距 |
20 mm |
EF 20mm f/2.8 USM
This lens is an EF 20mm 2.8 USM.
- Lens construction: 11 elements in 9 grps
- Diagonal angle of view: 94°
- Focus adjustment: Rear focusing system with USM
- Closest focusing distance: 0.25m / 0.8ft
- Ultra-wide-angle lens for serious applications.
- Easy to hold and carry at 405 grams.
Floating rear focusing system. Sharp images are obtained at all subject distances
Ultra-wide-angle lens for serious applications. Easy to hold and carry at 405g. Floating rear focusing system. Sharp images are obtained at all subject distances.