Canon RF Patents: 28mm f/1.4, 30mm f/1.4 and 35mm f/1.4 Lenses

Canon filed a patent discussing optical designs of RF 28mm F1.4, RF 30mm F1.4 and RF 35mm F1.4 for Canon full frame mirrorless cameras.

[Publication number] JP 2021-63966(P2021-63966A)
[Publication date] April 22, 2021
[Patent application title] Optical system and imaging device

RF28mm F1.4
Focal length: 28.00 mm
F number: 1.42
Half angle of view: 37.69
Image height: 21.64 mm
Lens length: 140.62 mm
Back focus: 21.99 mm

RF30mm F1.4
Focal length: 29.26 mm
F number: 1.42
Half angle of view: 36.48
Image height: 21.64 mm
Lens length: 118.08 mm
Back focus: 10.05 mm

RF35mm F1.4
Focal length: 34.98 mm
F number: 1.42
Half angle of view: 31.73
Image height: 21.64 mm
Lens length: 154.45 mm
Back focus: 16.17 mm

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