Canon patent for EF 28-560mm f/2.8-5.6 lens

Another Canon patent for an interesting optical for mule, a EF 28-560mm f/2.8-5.6 lens for full-frame sensors. That’s a 20x zoom, and I can’t help but have to think about some compact, mirrorless full-frame camera :-)

• Patent Publication No. 2016-80973
  • Published 2016.5.16
  • Filing date 2014.10.21
• Example 1
  • Zoom ratio 18.78
  • Focal length 28.80 139.49 540.91
  • F-number 2.88 4.77 5.88
  • Half angle of view (degrees) 36.91 8.82 2.29
  • Image height 21.64
  • The total lens length 298.13 341.13 398.13
  • BF 44.99 76.94 116.58