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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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