Northlight has uncovered a USPTO patent dealing with various prime lenses for the RF mount with a max aperture of f/1.8
Canon RF 105mm f/1.8
Focal Length: 105.00mm
F-number: 1.85
Half Angle of View: 11.64°
Image Height: 21.63mm
Overall Lens Length: 145.01mm
Canon RF 130mm f/1.8
Focal Length: 131.00mm
F-number: 1.85
Half Angle of View: 9.38°
Image Height: 21.63mm
Overall Lens Length: 155.01mm
BF: 27.26mm
Canon RF 150mm f/1.8
Focal Length: 150.00mm
F-number: 1.85
Half Angle of View: 8.21°
Image Height: 21.63mm
Overall Lens Length: 164.98mm
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