Canon multiple prime lenses patents spotted by Japanese patent hunting website hi-lows. The new range of RF Mount-based prime lenses includes RF 28mm F1.4, 30mm F1.4, and 35mm F1.4 Lens. Here are some details grabbed from the patents
Embodiment 1: RF35mm F1.4
Focal length: 35.00 mm
F number 1.42
Half angle of view: 31.72
Image height: 21.64 mm
Lens length: 112.71 mm
Back focus: 13.62 mm
Embodiment 5: 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
Embodiment 6: 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