Canon has just file a new patent for EF 28-560mm f/2.8-5.6 lens. This is a super zoom lens with quite large in size!
Detail translated by Google:
- Patent Publication No. 2016-80973
- Published 2016.5.16
- Filing date 2014.10.21
- Example
- Zoom ratio 18.78
- Focal length 28.80 139.49 540.91
- F-number 2.88 4.77 5.88
- Half angle (in degrees) 36.91 8.82 2.29
- Image height 21.64
- Overall length of the lens 298.13 341.13 398.13
- BF 44.99 76.94 116.58
Source: EGAMI
Read More Canon Lens Patent