Canon News has uncovered a patent that shows Canon is working on small RF prime lenses, like non-L.
RF prime lens optical formulas in this patent:
- Canon RF 20mm f/2 (Lens length of 70mm)
- Canon RF 35mm f/2.8 (Lens length of 40mm)
- Canon RF 45mm f/2.8 (Lens length of 43mm)
- Canon RF 35mm f/2 (Lens length of 30mm)
Beyond the prime lenses, there is also a wide-angle f/4 zoom included.
- Canon RF 16-35mm f/4 (Lens length 90mm – 97mm)
Looking at all the embodiments, I think only the RF 16-35mm f/4 could realistically be coming.