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Canon Patent Application: Canon RF 15-35 2.8,17-70 3.5-5.6
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Canon Patent Application: Canon RF 15-35 2.8,17-70 3.5-5.6

It was a matter of time before this patent application was discovered.  Here we have the upcoming 15-35mm 2.8 patent application and with a bonus surprise what appears to be a non-L 17-70mm included.

As we can see from the diagram, the 15-35mm certainly not a simple lens, however, the 17-70 is certainly a more consumer capable with a far simpler optical design (see below)

While we know the 15-35 is coming out sometime this year, it will be interesting if the 17-70mm comes out in the future as well. it's an interesting focal range, and I personally would get it in a heartbeat.

Canon RF 15-35mm 2.8L

Focal distance 15.30 24.20 34.00 
F number 2.91 2.91 2.91 
Field angle 54.73 41.80 32.47 
Image height 21.64 21.64 21.64 
Whole length of the lens 135.05 125.84 125.33 
BF 13.00 22.20 32.26 

Canon RF 17-70mm 3.5-5.6

Focal distance 17.30 35.00 68.00 
F number 3.58 4.18 5.85 
Field angle 51.35 31.72 17.65 
Image height 21.64 21.64 21.64 
Whole length of the lens 142.70 138.53 143.42 
BF 13.32 29.60 57.62 

Japan Patent Application 2019-066701

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