Richard CanonNews / Thursday, January 11, 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 applies for a fisheye lens (one possible mirrorless prime?) patent We discovered this patent, and while the full frame lens of a 15/4.0 sounds actually quite nice, there is an APS-C lens with a shorter than EF-S backfocus that would also have mirrorless implications. Edit: as someone noted, these are 175 degrees so most likely prime fisheye lenses. APS-C 9.5mm 4.0 Focal distance 9.50 F number 4.10 Imaging field angle (degree) 175 Image height 13.66 Whole length of the lens 63.97 BF 23.16 Full frame EF mount 15mm 4.0 Focal distance 15.18 F number 4.12 Imaging field angle (degree) 175 Image height 21.64 Whole length of the lens 130.16 BF 58.19 Japan Patent Application 2018-004726 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 applies for an optical viewfinder patent for mirrorless cameras Next Article Canon continues to work on organic sensors Print Tags: Patents Please login or register to post comments.