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Canon RF 14-21mm f/1.55, 12-20mm f/2.0 and 16-32mm f/2.8 full-frame mirrorless lenses patented

Canon RF 14-21mm f/1.55, 12-20mm f/2.0 and 16-32mm f/2.8 full-frame mirrorless lenses patented

Photo Rumors

Canon filed a patent (20180314060) for a new RF wide-angle full-frame mirrorless zoom lens. As it is typical with lens patents, three different calculations were presented - 14-21mm f/1.55, 12-20mm f/2.0 and 16-32mm f/2.8: Focal Length   14.50    17.45   21.00 F-Number        1.55     1.55    1.55 Image Height   21.64    21.64   21.64 BF    […]

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