According to the Egami Blog, Canon has patented the optical design for an EF 28-560mm f/2.8-5.6.
With full-frame coverage, a huge focal range and an f/5.6 maximum aperture at the lens’s longest extent, this would be a very enticing lens for many wildlife and sports photographers.
Patent Description
With full-frame coverage, a huge focal range and an f/5.6 maximum aperture at the lens’s longest extent, this would be a very enticing lens for many wildlife and sports photographers.
Patent Description
- Patent Publication No. 2016-80973
- Published 2016.5.16
- Submitted 2014.10.21
- Zoom ratio 18.78
- Focus distance 28.80 139.49 540.91
- F-number 2.88 4.77 5.88
- Angle of View (degrees) 36.91 8.82 2.29
- Length 298.13 341.13 398.13
- BF 44.99 76.94 116.58
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