New Patent: Canon RF 100-400mm f/5-7.1 IS USM Lens

Canon has filed a new lens patent for the RF 100-400mm f/5-7.1 IS USM Lens for Canon full-frame mirrorless cameras. See the patent details below. Canon RF 100-400mm f/5-7.1 IS USM Focal length: 103.00mm 200.00mm 388.50mm F-number: 5.00 6.26 7.10 Half angle of view: 11.86° 6.17° 3.19° Image height: 21.64mm 21.64mm 21.64mm Lens overall length: 215.58mm 255.38mm 293.58mm Backfocus: 38.40mm […]

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Canon RF Patents: 22mm, 24mm, 33mm & 35mm f/1.4 Lenses

Canon filed a patent discussing optical designs of RF 22mm f/1.4L, 24mm f/1.4L, 33mm f/1.4L and 35mm f/1.4L USM lenses for Canon full frame mirrorless cameras. [Publication number] JP 2021-113905 (P2021-113905A) [Publication date] August 5, 2021 [Patent application title] Optical system and imaging device Embodiment 1 FOCAL LENGTH (MM): 35.00 F NUMBER: 1.42 HALF ANGLE OF VIEW (DEGREE): 31.73 IMAGE […]

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Patent: Canon RF 35mm, 28mm & 24mm f/1.2L Lenses

Canon filed a patent discussing optical designs of RF 35mm f/1.2L, 35mm f/1.4L, 28mm f/1.2L and 24mm f/1.2L for Canon full frame mirrorless cameras. [Publication number] JP 2021-92694(P2021-92694A) [Publication date] June 17, 2021 [Patent application title] Optical system and imaging device Embodiment 1: RF 35mm F1.2 Focal lenth (mm): 34.00 F number: 1.24 Half angle of view (degree): 32.47 Image […]

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Patent: Canon RF 130mm f/1.4L, RF 135mm f/2L & RF 24mm f/1.4L USM Lenses

Canon has filed a new patent showing optical formulas for three fast prime lenses: RF 130mm f/1.4L USM lens, RF 135mm f/2L USM lens and RF 24mm f/1.4L USM lens. Canon RF 130mm f/1.4L USM Focal length: 131.00mm F-number: 1.41 Angle of view: 9.38° Image height: 21.64mm Lens length: 182.28mm Backfocus: 13.87mm Canon 135mm f/2L USM Focal length: 133.50mm F-number: […]

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Canon RF Patents: 28mm f/1.4, 30mm f/1.4 and 35mm f/1.4 Lenses

Canon filed a patent discussing optical designs of RF 28mm F1.4, RF 30mm F1.4 and RF 35mm F1.4 for Canon full frame mirrorless cameras. [Publication number] JP 2021-63966(P2021-63966A) [Publication date] April 22, 2021 [Patent application title] Optical system and imaging device RF28mm F1.4 Focal length: 28.00 mm F number: 1.42 Half angle of view: 37.69 Image height: 21.64 mm Lens […]

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