New Patent: Sigma 28-200mm f/3.4-5.6 DG Lens

Sigma has filed a new patent for Sigma 28-200mm f/3.4-5.6 DG Lens for Sony E-mount full frame mirrorless cameras. Take a look at the patent details below: 【Publication number】 JP 2020-204684(P2020-204684A) 【Release date】 December 24, 2020 【Patent application title】 Imaging optical system Embdiment 1 Zoom ratio: 7.14 Focal length: 27.99 71.70 199.93 mm F number: 3.37 4.67 5.60 Angle of […]

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