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Patent: Canon RF 13-21mm f/2.8L

By Canon Rumors | February 27, 2020

A patent showcasing an RF 13-21mm f/2.8 optical formula has appeared in Japan. Canon RF 13-21mm f/2.8 embodiment: Zoom ratio: 1.58 Focal length: 13.40mm  17.30mm  Read more…

Patent: Canon 100-400mm f/5.6-7.1

By Canon Rumors | February 20, 2020

Canon News has uncovered a patent for an APS-C 100-400mm F5.6-7.1 optical formula.  (Richard also messed it up by not noticing it was APS-C at Read more…

Patent: Canon RF Mount Accessories

By Canon Rumors | February 6, 2020

Keith over at Northlight-Images has uncovered a patent that showcases some of the capabilities of the RF mount as related to accessories such as extenders, Read more…

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