Canon Patents: RF 28-70mm f/2.8 & RF 28-60mm f/4 Lenses

Canon has filed two new RF lens patents for the RF 28-70mm f/2.8 and RF 28-60mm f/4 Lenses for Canon EOS R system. Take a look at the patent details below: [Publication number] JP 2021-179550(P2021-179550A) [Publication date] November 18, 2021 [Patent application title] Optical system and imaging device Embodiment 1 Zoom ratio: 2.35 Focal length (mm): 28.84 39.89 67.90 F […]

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