Canon has filed a new lens patent for upcoming Canon RF lenses. This new lens is RF 24-70mm f/4L IS USM lens. This lens will likely be a new kit lens for Canon EOS R full frame mirrorless cameras. See the detail below:
Canon recently has filed two new diffractive optics lenses in Japan. These two lenses are 300mm f/2.8 DO & 400mm f/2.8 DO. According to patents, these two lenses are probably RF mount lenses. We may see these lenses announced in 2020 with EOS R verison EOS-1D X Mark II.
Sigma recently has filed a new lens patent in Japan: Sigma 12mm f/2.8 full frame lens.
Tamron has filed several new super telephoto prime lenses in Japan. These lens patents are Tamron 300mm f/2.8 Lens, Tamron 400mm f/4 Lens, Tamron 500mm f/4 Lens.
Canon Japan recently has filed two all-in-one zoom lenses for both full frame DSLR camera and APS-C DSLR cameras. See below:
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