Richard CanonNews / Thursday, January 24, 2019 / Categories: Canon Patents This post may contain affiliate links(s). An affiliate link means I may earn advertising/referral fees if you make a purchase through my link, without any additional cost to you. It helps to keep this site afloat. Thank you in advance for your support. If you like what we do here, maybe buy me a coffee. Canon Patent Application: Canon RF 70-300 Sooner or later Canon will have to fill out the lens lineup for the RF mount, that also includes telephoto zooms. A common telephoto zoom is the 70-300 and in this patent application, we find a 70-300 4-5.6 which is a consumer zoom, for the RF mount. Focal Length 71.92 131.60 292.27 F-Number 4.00 4.79 5.83 Angle of view 16.74 9.34 4.23 Image Height 21.64 21.64 21.64 Lens length 170.68 207.64 241 BF 8.32 56.52 69.89 US Patent Application 20190025560 Richard CanonNewsRichard CanonNews Richard has been using Canon cameras since the 1990s, with his first being the now legendary EOS-3. Since then, Richard has continued to use Canon cameras and now focuses mostly on infrared photography. Richard is the founder and editor of CanonNews since 2017, and has worked as a writer on CanonRumors and other websites in the past. Other posts by Richard CanonNews Contact author Facebook page Previous Article Canon Patent Application: Various Canon RF high end kit lenses Next Article Canon Patent Application: Another stacked sensor patent application Print Please login or register to post comments.