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Canon Patent For Cooling Adapter For The RF Mount

Canon Patent For Cooling Adapter For The RF Mount

Did Canon foresee the EOS R5/R6 overheating hysteria? A Canon patent suggests so. Canon patent application 2019-186871 (Japan) describes an adapter for the Canon RF mount which seems to have…

Canon Patent For Various RF Mount Zoom Lenses

Canon Patent For Various RF Mount Zoom Lenses

Canon patent application US20190369372 discusses optical formulas for various zoom lenses for the Canon EOS R system. Among the discussed optics in this Canon patent application is a 28-280mm f/2.8…

Canon Patent: RF 300mm F/2.8 IS And RF 400mm F/2.8 IS

Canon Patent: RF 300mm f/2.8 IS And RF 400mm f/2.8 IS

And yet another Canon patent application: two telephoto fast primes for the RF mount. Canon patent application 2023104022 (Japan, published 7/28/2023) discusses optical formulas for two fast telephoto prime lenses…

Canon Patent: RF 15mm F/2 And RF 12mm F/2.8 Lenses

Canon Patent: RF 15mm f/2 And RF 12mm f/2.8 Lenses

And here is another Canon patent application, for two RF mount lenses. Canon patent application 023104029 (Japan, 7/28/2023) discusses optical formulas for two fast prime lenses for the RF mount:…

Canon Patent: RF 100-300mm F/2.8L IS USM Lens

Canon Patent: RF 100-300mm f/2.8L IS USM Lens

A new Canon patent application was spotted. Canon patent application 2023099388 (Japan, published 7/13/2023) discusses optical formulas for what appears to be an RF 100-300mm f/2.8L IS USM lens for…

Canon Patent: RF-S 10-14mm F3.5-4 Lens For APS-C

Canon Patent: RF-S 10-14mm F3.5-4 Lens For APS-C

After a long time, here is a new Canon patent application. Canon patent application 2023066202 (Japan, published 5/15/2023) discusses optical formulas for a RF-S 10-14mm F3.5-4 lens, i.e. a lens…

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