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https://www.canonwatch.com/canon-patent-application-wide-angle-zoom...

Canon patent application: wide-angle zoom lens for full-frame mirrorless camera

Canon patent application 2018-77320A describes a 16-28mm f/2.8, wide-angle zoon lens for a full frame mirrorless camera.

Zoom ratio: 1.67
Focal length: 16.48 ? 27.44mm
F number: 2.88
Half angle: 52.70 ? 38.25
Image height: 21.64mm
Back focus: 12.33 ? 10.00mm

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