Canon Patents EF 28-560mm F/2.8-5.6

Canon Patents EF 28-560mm F/2.8-5.6

Canon has lodged a patent for an extremely impressive sounding EF 28-560mm F/2.8-5.6 lens for full frame sensor cameras. Canon are rumored to already be working on a replacement for the popular EF 28-300 f/3.5-5.6L IS, but the formula for the patented lens in comparison is truly outstanding, with it’s fast 2.8 minimum aperture and huge focal range. The only foreseeable downside to such a product would be its potential size. We will be watching this one closely to see if the lens is destined for production.

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

Source: canonrumors.

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