Continue reading...Canon continues to work on new zoom lens ideas for the RF mount according to this JPO patent, I can only see one lens below that makes sense for a consumer product, and that’s the Canon RF 24-70mm f/4 optical design.
Now hidden in here is an optical formula for what looks to be an APS-C RF mount optical design. The Canon RF 15-70mm f/4-7.1 has an image height that differs significantly from the other 4 optical designs, suggesting it’s for a smaller sensor. Please correct me if I’m wrong on that assumption.
Canon RF 24-70mm f/4
Focal Length: 24.72-67.90mm
Half angle of view: 41.50 – 17.30°
Image height: 19.69-21.64mm
Overall lens length: 101.50-141.15mm
Canon RF 24-120 f/4-7.1
Focal Length: 24.72-116.40mm
Half angle of view: 41.80-10.30°
Image height: 19.90-21.64mm...