Here are the latest Canon RF patents for its full frame mirrorless camera system. These lenses are the RF 12mm f/2.8, RF 14mm f/2.8 & RF 20mm f/2.8 Lenses and all of them are not in the lens roadmap.
To date, Canon has offered great lenses for the RF mount and demonstrated how committed it is to a full frame mirrorless camera system. See the complete Canon RF mount lenses. Also here is the list of Canon RF series lenses expected to be released in the next two years. Canon RF Lens Roadmap for 2021 & 2022.
Take a look at the patent details below:
[Publication number] JP 2021-47384(P2021-47384A)
[Publication date] March 25, 2021
[Patent application title] Optical system and imaging device
Canon RF 12mm f/2.8
Embodiment 1
Focal length: 12.35 mm
F number: 2.88
Half angle of view: 60.28
Image height: 21.64 mm
Lens length: 80.22 mm
BF 16.54 mm
Canon RF 14mm f/2.8
Embodiment 2
Focal length: 14.42 mm
F number: 2.88
Half angle of view: 56.32
Image height: 21.64 mm
Lens length: 91.61 mm
BF 17.29 mm
Canon RF 20mm f/2.8
Embodiment 3
Focal length: 19.48 mm
F number: 2.88
Half angle of view: 48.02
Image height: 21.65 mm
Lens length: 90.74 mm
BF 19.35 mm
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