The latest patents from Canon, Sigma, and Viltrox

Tons of Canon Patents Found 9-18mm F4 IS, 10-20mm F2.8-4 IS, 11-22mm F2.8 IS, 12-30mm F4-6.3, 24-50mm F4-6.3, 14-30mm f/4-6.2, 24-50mm f/4-6.2, and 12-28mm f/4-6.4

Canon Patents For 15-28mm F2.8 and 17-30mm F2.8 Zooms

More Canon Patents 400-600mm F2.8-4, 300-600mm F2.8-4.5, and 70-300mm F4

Canon 180mm F3.5 Macro, 300mm F4 Macro, and 100mm F4 Macro Patents

Sigma 10-24mm F4 DG and 9-18mm F2.8 DC Patents Found

Viltrox Large Aperture Lens Patent Found

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