Richard CanonNews / Thursday, February 7, 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: Super Telephotos Canon has applied for a patent that describes a few of their super telephotos. Research never stops on super telephotos regardless of when the last release was done. There are quite a few embodiments in this patent application; Focal length 294.00 F-number 2.91 Half angle of view (degrees) 4.21 Image height 21.64 Total lens length 276.40 BF 65.35 Focal length 392.00 F-number 2.90 Half angle of view (degrees) 3.16 Image height 21.64 Total lens length 371.25 BF 69.92 Focal length 490.00 F-number 4.12 Half angle of view (degrees) 2.53 Image height 21.64 Total lens length 410.77 BF 66.03 Focal length 784.00 F-number 5.80 Half angle of view (degrees) 1.58 Image height 21.64 Total lens length 484.53 BF 75.94 US Patent Application 20190041606 US Patent Application 20190041605 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: IS unit with better control over vignetting Next Article Canon Patent Application: Canon RF 70-300, Canon RF 100-400 Print Please login or register to post comments.