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Continue to ChatPatent: Canon shows off optical formulas for APS-C RF mount kit lenses https://www.canonrumors.com/patent-canon-shows-off-optical-formulas-for-aps-c-rf-mount-kit-lenses/
Patent: Canon shows off optical formulas for APS-C RF mount kit lenses https://www.canonrumors.com/patent-canon-shows-off-optical-formulas-for-aps-c-rf-mount-kit-lenses/