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Canon Patent Application: Canon RF 70-300 | Canon News
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Canon Patent Application: Canon RF 70-300
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Canon Patent Application: Canon RF 70-300

Sooner or later Canon will have to fill out the lens lineup for the RF mount, that also includes telephoto zooms.  A common telephoto zoom is the 70-300 and in this patent application, we find a 70-300 4-5.6 which is a consumer zoom, for the RF mount.

Focal Length 71.92   131.60  292.27
F-Number 4.00  4.79  5.83
Angle of view  16.74  9.34   4.23
Image Height 21.64  21.64 21.64 
Lens length  170.68  207.64  241
BF 8.32 56.52  69.89

US Patent Application 20190025560

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