Richard CanonNews / Thursday, December 6, 2018 / 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 24-85mm, 24-70mm This patent application appears to be for a Canon RF lens mount lens of 24-85mm in focal length with a constant aperture of F4. One of the very necessary things for the RF mount, is a series of lighter weight and F4 zooms, not only the heavy and large exotic lenses. This would be a welcome addition to the RF lens ecosystem. Interestingly this lens also shows a significant ingress into the RF mount having a backfocus of 13.50mm where the RF mount has a distance of 20mm. There is also two 24-70mm lens designs as well, however one is more unlikely because of the extreme mount ingress, having a back focus of only 7.69mm. Focal Length 24.72 44.55 82.99 F-Number 4.12 4.12 4.12 Image height 21.64 21.64 21.64 BF 13.50 27.08 51.57 Focal Length 24.71 39.20 67.99 F-Number 4.12 4.12 4.12 Image height 21.64 21.64 21.64 BF 7.69 17.60 35.47 Focal Length 24.71 39.93 67.99 F-Number 4.12 4.12 4.12 Image height 21.64 21.64 21.64 BF 13.50 24.36 42.60 US Patent Application 20180348481 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 Print Tags: Canon EOS RPatent Application Please login or register to post comments.