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Canon Patent Application: Canon EF 17-70mm | Canon News
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Canon Patent Application: Canon EF 17-70mm
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Canon Patent Application: Canon EF 17-70mm

Canon has applied for a patent for a Canon EF 17-70 3.5-5.6 consumer zoom.

Focal Length     17.40    35.00   67.98
F-Number          3.23     4.10    5.85
Image Height     21.64     21.64  21.64  
BF               38.38     53.37  84.83

US Patent Application 20180275370

In another similar patent application, Canon has applied for a full frame EF 16-60mm 3-5-6.3 consumer zoom

Focal Length     16.30   24.10   58.00
F-Number          3.59    3.94    6.37
Image Height     21.64   21.64   21.64  
BF               38.42   45.65   83.75

US Patent Application 20180275382

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