In this patent application (2024-071267) Canon shows off a pretty awesome embodiment of a fabled Canon RF 14-20mm F2.0. We were rumored to see such a lens, but with Canon's supply issues, your guess is as good as mine if it's coming soon.
That all being said this looks like a pretty complete patent application even detailing the zoom group movement from wide to far, no image stretching, and nothing but Canon lens design expertise on display here.
Canon RF 14-20mm F2.0
Wide-angle Mid Telephoto
Focal length 14.30 18.00 21.50
F-number 2.06 2.06 2.06
Half angle (°) 56.54 50.24 45.18
Image height 21.64 21.64 21.64
Lens length 148.04 141.94 139.46
BF 13.87 16.78 20.30
Canon RF 12-24mm F2.8-4.0
Wide-angle Mid Telephoto
Focal length 11.30 18.00 23.80
F-number 2.93 3.49 4.09
Half angle (°) 62.42 50.24 42.27
Image height 21.64 21.64 21.64
Lens length 138.04 131.89 136.22
BF 13.87 19.38 22.14
As with all patent applications, this is a look into Canon's research and may or may not end up in a real product. That all being said, this lens would be in the kidney-selling category.
Source: Japan Patent Application 2024-071267
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