CanonNews / Thursday, April 16, 2020 / Categories: Canon Patents 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 Sigma donates 5% to Charities to fight COVID-19 New Rumor: IBIS coming to the EOS-M lineup Print 4257 Tags: Canon Patent Application Canon RF lenses Related articles Patent Application for Canon RF 16-28mm F2.8, 16-28mm F2.8-4 and 16-28mm F4 designs Canon Patent Application: High Magnification Super Telephoto Zooms Canon Patent Application: Curious Catadioptric Optical System Canon Patent Application: Drone Camera Assembly Canon Patent Application: Canon RF 130mm F2.0 Please enable JavaScript to view the comments powered by Disqus.blog comments powered by Disqus