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Canon Patent Application: Canon RF 70-300, Canon RF 100-400
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Canon Patent Application: Canon RF 70-300, Canon RF 100-400

In this patent application, Canon describes two lenses that are of special note and certainly required for the RF mount.  A 70-300, possibly consumer grade, and an RF 100-400mm, and another consumer grade (possibly) 50-250mm

Focal distance 102.21 195.97 389.86 ​
F number 3.83 4.93 5.85 
Half angle of view (degree) 11.95 6.30 3.18 
Image height 21.64 21.64 21.64 
Lens total length 204.85 250.29 291.30 
BF 4.31 31.68 97.49

Focal distance 68.25 126.36 288.22 
F number 4.16 4.68 5.83 
a half field angle (degree) -- 17.59 9.72 4.29 
Image height 21.64 21.64 21.64 
Whole length of the lens 168.24 189.04 207.81 
BF 12.70 30.65 79.58 ​

Focal distance 51.80 126.89 241.22 
F number 4.04 5.18 5.77 
a half field angle (degree) -- 22.67 9.68 5.13 
Image height 21.64 21.64 21.64 
Whole length of the lens 136.91 175.70 210.70 
BF 11.36 30.93 42.48 

Japan Patent Application 2019-020679

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