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Canon Patent: 18-100mm F4 And 14-60mm F4 Lenses

Canon Patent: 18-100mm F4 And 14-60mm F4 Lenses

Another Canon patent application today, for a 18-100mm f/4 lens and a 14-60mm f/4 lens. Canon patent application 2023018409 (Japan, published 2/8/2023) discusses optical formulas for two lenses we think…

Canon Patent For 100-400mm f/4.5-5.6 Lens

Egami (translated) spotted a patent for a 100-400mm f/4.5-5.6 lens with diffractive optical elements. We saw other patents for a 100-400mm in the past. The patent refers also to a…

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