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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…

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