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Canon Patent For 17-70mm Lens For EOS R System

Canon Patent For 17-70mm Lens For EOS R System

Here is another Canon patent application for a lens for the EOS R full frame mirrorless system. Canon patent application 2019-139172 (Japan) discusses optical formulas for a 17-70mm lens for…

Canon Patent: Apodization Filter For EF Lenses

Canon Patent: Apodization Filter For EF Lenses

Canon patent application 2019-0219789 describes formulas and technology about how to apply an apodization filter to EF mount lenses. The following lenses are discussed in the patent application: Canon EF…

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