Richard CanonNews / Thursday, April 18, 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 50mm F1.8, RF 28mm 1.8 Buried in the RF 35mm 1.8 patent application is two more lenses that have a very high degree of chance of being made This patent application also contains the 50mm 1.8 and the 28mm 1.8 lenses. Both of these lenses are for the RF mount as the back focus (BF) is around 20mm or under. The 28mm, shows a real significant ingress into the lens mount. While this is possible, it may not be practical. Focal length 48.50 F-number 1.85 Half angle of view (degrees) 24.04 Image height 21.64 Total lens length 95.00 BF 15.80 Focal length 28.80 F-number 1.85 Half angle of view (degrees) 36.91 Image height 21.64 Total lens length 80.30 BF 7.00 Update: There is talk that these lenses do not support IS. In the diagram about G2F is the IS compensation optic, and that optic appears in all the embodiments. it's very likely that all these lenses will ultimately contain IS. US Patent Application 20190113711 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 Mitakon Speedmaster 50mm f/0.95 III for the Canon RF mount announced Next Article Canon Patent Application: Canon RF 70-200 F4.0 Print Tags: Canon Patent Application RF 50mm 1.8RF 28mm 1.8 Please login or register to post comments.