Canon Patent Application: Canon RF 15-35 F4.0, Canon RF 16-35 F4.0

In this patent application is a design I am eagerly waiting to come out for the RF mount.  We have here the 15-35 or the 16-35mm optical design for F4.0.  These embodiments appear to be in a Canon RF 15-35mm 2.8L patent application.  It's highly likely that Canon will do either a 15-35 or a 16-35 F4.0, as it's a very successful lens for the EF mount.

These lenses have the signature "big element" situated in the back of the design that Canon flavors for the RF mount.

Focal distance 15.45 24.00 34.00 
F number 4.12 4.12 4.12 
Half field angle 54.47 42.03 32.47 
Image height 21.64 21.64 21.64 
Whole length of the lens 125.38 119.21 116.89 
BF 12.00 19.66 24.40 

Focal distance 16.48 24.00 34.00 
F number 4.12 4.12 4.12 
Half field angle 52.70 42.03 32.47 
Image height 21.64 21.64 21.64 
Whole length of the lens 127.27 116.39 111.30 
BF 10.95 16.82 23.58 

Japan Patent Application 2019-066654