Canon News has uncovered a patent with various APS-C RF mount lenses. On the Canon Rumors RF mount lens roadmap, I have had an RF 18-45mm f/4-5.6 IS STM for quite some time. I’ve always thought this was a strange focal length for full-frame image sensors based on Canon’s history of kit lens focal lengths.
I have not heard anything about an APS-C image sensor equipped sensor for the RF mount in quite some time, but I still believe such a camera is part of Canon’s long-term plans.
Canon RF-S 15-45mm F4-6.3
Focal distance: 15.46mm 24.00mm 43.65mm
F-number: 4.16 4.92 6.50
Half angle of view: 38.73° 29.65° 17.38°
Image Height: 12.40mm 13.66mm 13.66mm
Total length of lens: 96.84mm 85.69mm 84.27mm
BF: 26.19mm 34.03mm 49.18mm
Canon RF-S 18-45mm F4.5-6.3
Focal length: 18.53mm 30.00mm 43.65mm
F-numbe:r 4.56 5.48 6.50