Richard CanonNews / Thursday, April 16, 2020 / 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 Lenses Canon has been applying for many patents on the RF system - which makes sense, they were starting from scratch and making an entirely new system. They probably threw every engineer they had into the process. A lot of designs probably won't ever get developed, but some may be the basis of lenses we see in the future. A really necessary element of Canon RF lenses, that hasn't yet appeared is macro photography lenses. This patent application deals with high-speed focusing and keeping the aberrations low. In it, details several intriguing macro lenses some of them we have similar models on the EF mount. I do believe these are 1:1 macros, I think that's what β = -1.0 is, but if someone can confirm that, I'd be more than happy. ;) Canon RF 100mm F2.8 Macro Focal length 97.62 F number 2.92 angle of view 12.50 Image height 21.64 lens length 123.21 BF 18.86 Canon RF 90mm F2.8 Macro Focal length 87.04 F number 2.92 angle of view 13.96 Image height 21.64 lens length 135.86 BF 19.58 Canon RF 180mm F2.8 Macro focal length 189.96 F number 2.92 angle of view 6.50 Image height 21.64 lens length 185.34 BF 23.95 Canon RF 65mm F2.8 Focal length 65.13 F number 2.92 angle of view 18.38 Image height 21.64 lens length 135.78 BF 21.40 Japan Patent Application 2020-060661 Japan Patent Application 2020-060660 from Canon seems to be more of the same, with various designs of lenses that are high in magnification (β > -.50). The designs in this patent application, seem to fixate more around a 100mm focal length with designs such as this; focal length 95.36 F number 2.92 angle of view 12.78 Image height 21.64 total length 125.16 BF 15.84 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 Patent ApplicationCanon RF lenses Please login or register to post comments.