Back to blog

Patent: Canon EF 28-560mm f/2.8-5.6

By Canon Rumors | May 20, 2016

Patent: Canon EF 28-560mm f/2.8-5.6

A patent for a super zoom optical formula from Canon has appeared. We heard a few months ago that Canon was working on a replacement for the EF 28-300 f/3.5-5.6L IS. This optical formula is for a truly impressive EF 28-560mm f/2.8-5.6 super zoom. The likelihood of such a product? I’m not sure, as the lens would be quite large in size.

Patent Publication No. 2016-80973 (Google Translated)

  • Published 2016.5.16
  • Filing date 2014.10.21
  • 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

I looked a few times to make sure this idea wasn’t for a smaller sensor PowerShot camera, which it isn’t. This is for a full frame DSLR.

Back to blog