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A patent showing two optical formulas for some Canon RF primes has been uncovered by Canon News.
Canon RF 40mm f/1.8
- Focal Length: 41.92mm
- F-Number: 1.85
- Angle of View: 27.30°
- Image Height: 21.64mm
- Lens length: 71.50mm
- BF: 13.97mm
Canon RF 35mm f/1.8
- Focal length: 36.00mm
- F-number: 1.85
- Angle of view: 31.00mm
- Image height: 21.64mm
- Lens length: 79.97mm
- BF: 11.65mm
I'm expecting non-L RF mount prime lenses to be coming in the relatively near future, and this patent may be part of a series of Non-L prime lenses coming to the EOS R system
The patent does show a DSLR for the illustrations, but the backfocus length of these optical formulas shoes these designs are definitely for the RF mount.
